Я выбрал самовывоз, потому что магазин находится рядом с метро.

Выбрал is the past tense masculine singular form of the verb выбрать (to choose).

• Я выбрал = I chose if the speaker is male
• Я выбрала = I chose if the speaker is female

Russian past tense agrees with the speaker’s gender in the singular.

As for word order:

• Я выбрал is the most neutral order
• Выбрал я is possible, but it sounds more marked or contrastive, like It was I who chose... or I did choose...

So in a normal sentence, Я выбрал is the natural choice.

Самовывоз means self-pickup or customer pickup—you go to the shop or pickup point and collect the item yourself instead of having it delivered.

It is a common word in shopping and delivery contexts in Russian. You may also see phrases like:

• заказать с самовывозом = to order with self-pickup
• пункт самовывоза = pickup point

So Я выбрал самовывоз literally means I chose self-pickup.

Because it is the direct object of выбрал, and here it is in the accusative case.

For many masculine inanimate nouns, the accusative singular looks the same as the nominative singular.

So:

• nominative: самовывоз
• accusative: самовывоз

That is why the form does not change.

Потому что means because and introduces the reason for the first part of the sentence.

• Я выбрал самовывоз = I chose self-pickup
• потому что магазин находится рядом с метро = because the shop is located near the metro

It is one of the most common ways to say because in Russian.

A shorter, more formal alternative is так как, but потому что is very common and natural in everyday speech.

In Russian, a comma is normally used before потому что because it introduces a subordinate clause.

So:

• Я выбрал самовывоз, потому что магазин находится рядом с метро.

This is standard Russian punctuation.

Находится means is located or is situated. It is used when talking about where something is.

So:

• магазин находится рядом с метро = the shop is located near the metro

Russian often prefers находиться for location in more neutral or slightly formal speech.

Using есть here would sound wrong, because есть does not normally mean simple location in this kind of sentence.

Compare:

• Магазин рядом с метро. = The shop is near the metro.
• Магазин находится рядом с метро. = The shop is located near the metro.

Both work, but находится makes the idea of location more explicit.

The expression рядом с means next to / near, and it requires the instrumental case.

So the pattern is:

• рядом с + instrumental

Examples:

• рядом с домом = near the house
• рядом с магазином = near the shop
• рядом с метро = near the metro

In your sentence, метро does not change form because it is an indeclinable noun in Russian. Even though it is in the instrumental here, it still looks like метро.

Метро is one of several Russian nouns that are indeclinable, meaning they do not change form across cases.

So you get:

• метро
• у метро
• к метро
• с метро
• рядом с метро

The case is understood from the preposition and sentence structure, not from a changed ending.

This is common with some borrowed words, including:

• метро = metro/subway
• кафе = café
• пальто = coat

Yes, often you can.

Russian frequently drops subject pronouns when the meaning is already clear from the verb form or context.

So both are possible:

• Я выбрал самовывоз, потому что магазин находится рядом с метро.
• Выбрал самовывоз, потому что магазин находится рядом с метро.

The version with Я is a little more explicit. The version without Я can sound more conversational if the subject is already obvious.

Выбрал is perfective, from выбрать, and it means a completed choice: I chose / I selected.

The imperfective partner is выбирать:

• Я выбирал = I was choosing / I used to choose / I chose repeatedly, depending on context

In this sentence, the speaker is talking about a finished decision, so выбрал is the natural form.

Yes, that is possible.

• около метро = near the metro
• рядом с метро = next to / close to the metro

Both can often be translated as near the metro, though рядом с can suggest a bit more closeness.

Also compare these styles:

• магазин около метро = simpler, shorter
• магазин рядом с метро = also natural
• магазин находится рядом с метро = a bit fuller, more explicit about location

All are grammatically correct; they just differ slightly in style and nuance.

No, Russian word order is flexible, though some orders sound more neutral than others.

The most neutral version here is:

• Я выбрал самовывоз, потому что магазин находится рядом с метро.

You might also hear:

• Потому что магазин находится рядом с метро, я выбрал самовывоз.

This puts more focus on the reason first, similar to Because the shop is near the metro, I chose self-pickup.

So the word order can change, but the original version is the most straightforward and natural for many contexts.