Nel mazzo che ha scelto Sara c’è un giglio bianco e un girasole molto grande.

Nel is the contraction of in + il.

So:

• in il mazzo → nel mazzo

This is very common in Italian. Prepositions often combine with definite articles:

• in + il = nel
• di + il = del
• a + il = al
• su + il = sul

So nel mazzo means in the bouquet.

Here, mazzo means a bouquet or bunch of flowers.

The word mazzo can have different meanings depending on context, such as:

• a bunch
• a stack
• a deck (for cards)
• a bouquet

Because the sentence mentions flowers like giglio and girasole, mazzo clearly means a bouquet here.

Here che is a relative pronoun, meaning that or which.

It connects il mazzo to the clause that describes it:

• il mazzo che ha scelto Sara
• the bouquet that Sara chose

So che refers back to mazzo and introduces extra information about it.

Both are possible.

• che ha scelto Sara
• che Sara ha scelto

Both mean that Sara chose.

Italian word order is often more flexible than English. In this sentence, putting Sara after the verb sounds natural and smooth. It is especially common when the subject is a proper name and the focus is more on the action or the object.

So:

• che ha scelto Sara = perfectly natural
• che Sara ha scelto = also correct, slightly more straightforward for English speakers

Ha scelto is the passato prossimo of scegliere (to choose).

It is formed with:

• ha = third person singular of avere
• scelto = past participle of scegliere

So:

• Sara ha scelto = Sara chose / Sara has chosen

Italian often uses the passato prossimo where English might use either the simple past or the present perfect, depending on context.

Also, scegliere takes avere as its auxiliary, not essere.

Because che ha scelto Sara is a restrictive relative clause: it identifies which bouquet we are talking about.

• Nel mazzo che ha scelto Sara... = In the bouquet that Sara chose...

This clause is necessary to define the noun, so Italian normally does not use commas here.

If it were extra, non-essential information, commas might appear, but that is not the case in this sentence.

This is a very common question.

Strictly speaking, because two things are listed—

• un giglio bianco
• e un girasole molto grande

—you might expect ci sono.

However, c’è is very often used in spoken and informal Italian when the speaker introduces the first item and then adds another one. So:

• c’è un giglio bianco e un girasole molto grande

is very natural and common.

A more formally regular version would be:

• ci sono un giglio bianco e un girasole molto grande

So the sentence as given is not unusual at all, especially in everyday Italian.

C’è means there is.

It comes from:

• ci
  • è

Here ci is part of the expression meaning there, and è means is.

So:

• c’è = there is
• ci sono = there are

The accent on è is important because it is the verb essere (to be), not the conjunction e (and).

Both giglio and girasole are masculine singular nouns, so they take the masculine singular indefinite article un.

• un giglio = a lily
• un girasole = a sunflower

Italian indefinite articles work like this:

• un for most masculine singular nouns
• uno for certain masculine nouns beginning with s + consonant, z, ps, gn, etc.
• una for feminine singular nouns

So here un is correct for both nouns.

These adjectives must agree with the nouns they describe.

Both nouns are masculine singular:

• giglio → masculine singular
• girasole → masculine singular

So the adjectives are also masculine singular:

• bianco = white
• grande = big / large

That gives:

• un giglio bianco
• un girasole molto grande

If the noun were feminine singular, you would usually get bianca, for example:

• una rosa bianca

In Italian, adjectives often come after the noun, much more often than in English.

So:

• un giglio bianco = a white lily
• un girasole grande = a big sunflower

Some adjectives can come before the noun, but after the noun is the most neutral and common position, especially for descriptive adjectives like color and size.

Also, color adjectives such as bianco very often come after the noun.

Here molto means very.

It is modifying the adjective grande:

• grande = big / large
• molto grande = very big / very large

In this use, molto is an adverb, so it does not change form.

Compare:

• un girasole molto grande = a very large sunflower

But when molto is an adjective meaning much/many, it does agree:

• molti fiori = many flowers
• molta acqua = much water

Italian often puts a place or setting expression at the beginning to establish the context first.

So:

• Nel mazzo... = In the bouquet...

This tells us immediately where the flowers are. Then the sentence continues with the description of that bouquet.

This word order is very natural in Italian and helps organize the information clearly.