The answer to the question above would be that in the active voice the selected sentence would be as follows: The reporter interviewed the students.
In most English sentences with an action verb, the subject is the one doing the action denoted by the verb. Because the subject "does" or "acts upon" the verb, the sentence is said to be in the active voice. In this case, the one performing the action is the reporter.
This is an instance of dramatic irony, taking into account that this figure of spech is when the implications of a situation, speech, etc, are understood by the audience but not by the characters in the play.
