Cada participante explora la sala.

Cada participante means each participant, so it focuses on people one by one as individuals.

Todos los participantes means all the participants, which talks about the group as a whole.

So:

• Cada participante explora la sala. = Each participant explores the room.
• Todos los participantes exploran la sala. = All the participants explore the room.

Because cada is singular in meaning here, it is followed by a singular noun and a singular verb.

The subject is cada participante, and Spanish treats that as singular.

So you use:

• cada participante explora not
• cada participante exploran

This is similar to English with each:

• Each participant explores the room.

Even though many participants may exist, each participant is grammatically singular.

Explora is the third-person singular present tense of explorar.

Conjugation:

• yo exploro = I explore
• tú exploras = you explore
• él/ella/usted explora = he/she/you explore

In this sentence, participante is the subject, so the verb takes the él/ella/usted form: explora.

It can mean either one, depending on context.

Spanish present tense often covers both:

• explores
• is exploring

So Cada participante explora la sala could mean:

• Each participant explores the room.
• Each participant is exploring the room.

If you want to make the progressive idea more explicit, Spanish can also use:

• Cada participante está explorando la sala.

But the simple present is very common and natural.

Participante means participant.

It is a noun ending in -e, and it can refer to either a male or a female participant. The article or context can show gender if needed:

• el participante = the male participant
• la participante = the female participant

In cada participante, there is no article, so the word stays neutral in form and could refer to any participant.

After cada, Spanish normally uses a noun without an article:

• cada participante
• cada persona
• cada estudiante

So you would not normally say:

• cada el participante

That is incorrect.

This is just the standard pattern: cada + singular noun

In Spanish, it is very common to use the definite article where English might say the, a, or sometimes nothing at all, depending on context.

Here, la sala means the room or the hall/lounge, depending on context. The article is natural because the sentence is probably referring to a specific room already known in the situation.

Also, sala is a feminine noun, so the article is la:

• la sala

Not exactly. Sala usually refers to a room such as a hall, living room, main room, or lounge-type space, depending on context.

Related words:

• sala = room, hall, lounge
• habitación = room, often a bedroom or hotel room
• cuarto = room; often more general and very common in everyday speech

So la sala may suggest a more specific kind of room than just any room. In some contexts, it could even be a hall or main area.

This is the most neutral and standard Spanish word order:

subject + verb + object

• Cada participante = subject
• explora = verb
• la sala = direct object

Spanish can sometimes change word order for emphasis, but this version is the most straightforward and natural for a simple statement.

A simple Latin American-style pronunciation would be approximately:

KAH-dah pahr-tee-see-PAHN-teh eks-PLOR-ah lah SAH-lah

A few details:

• cada → stress on CA
• participante → stress on PAN
• explora → stress on PLO
• sala → stress on SA

Also:

• The x in explora sounds like ks
• The r in explora is a single tapped r, not a strong rolled rr

Yes, but it means something slightly different.

• Cada participante explora la sala. = Each participant explores the room.
• Cada uno explora la sala. = Each one explores the room.

Cada uno is more general and usually depends on context. It works when it is already clear who each one refers to.
Cada participante is more explicit because it names the group directly.

Sometimes, yes. Explorar often sounds a bit like explore, so it can suggest looking around carefully, examining, or investigating.

Depending on context, Spanish speakers might also use:

• recorrer la sala = go around the room
• examinar la sala = examine the room
• mirar la sala = look at the room

But explora is not wrong. It is perfectly understandable and natural if the intended meaning is that each participant is exploring or checking out the room.