Answer:
The correct answer is: O.
Step-by-step explanation:
The verbs ending in –ar belong to the group of verbs of the first conjugation. The model verb of this group is to "amar". This means that all regular verbs ending in -ar will share the conjugation forms of this verb. For example: amar / amo, saltar / salto.
These verbs, like those ending in -er and -ir, are infinitive verbs. The infinitive is the grammatical form that gives its name to the verb, and it is presented in an unconjugated form: it has no verbal time, mode or person.
For example:
Yo como.
Yo bailo.
Yo corro.
Yo llamo.
Yo llego.