Question

is this sentence in active voice or passive voice?
kelsey might have an opportunity to testify at the trial.
active voice
passive voice

Explanation:

In the sentence "Kelsey might have an opportunity to testify at the trial", the subject (Kelsey) is the one who could perform the action (testify, through having the opportunity). In active voice, the subject performs the action (or is associated with the action in a way where the subject is the doer or the entity related to the action's agency), while passive voice would have the subject receiving the action. Here, Kelsey is the one with the opportunity (the subject is the agent of the "having an opportunity" and related action), so it's active voice.

Answer:

active voice