Respuesta :
The sentence is in present, and conjugating the verb "participar", which is in infinitive.
Depends what the instructions were, the answers can be:
1. participó (PAST)
2. participa (PRESENT)
3. participará (FUTURE)
Depends what the instructions were, the answers can be:
1. participó (PAST)
2. participa (PRESENT)
3. participará (FUTURE)