Question

Which sentence is written in active voice?

The progress reports are to be signed by the students' parents.
The teachers allow extra credit opportunities to all their students.
Some students are given trouble by the reading passages that are longest.
The students had been held longer by the monitor in study hall.

Answer 1

The teachers allow extra credit opportunities to all their students.

Answer 2

I believe sentence B is written in active voice. The subjects, which in this case are the teachers, are performing the action. The action being performed is allowing extra credit opportunities.