Question

The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. It made them happy.

The sixth-grade students liked volunteering his or her time to read to the elderly people in the hospital. It made them happy.
The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. It made the volunteers happy.
The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. They made them happy.
The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. Reading made them happy.

Answer 1

Answer:D

Step-by-step explanation:

because i took the test and got it right

Answer 2

The second option

Step-by-step explanation:

It's the only one with the correct grammar :)