Answer:
In the sentence "You are in the gymnasium," the correct infinitive to use would be "estar." so its 2
Step-by-step explanation:
In this sentence, the correct infinitive to use would be "estar." In Spanish, the verb "estar" is used to indicate a temporary or changeable state or condition, such as being in a particular location. The verb "ser," on the other hand, is used to indicate a permanent or inherent characteristic, such as a person's occupation or nationality. So in this sentence, the fact that you are in the gymnasium is a temporary state, and therefore "estar" is the correct verb to use.