HELPP PLEASEE!!
Which of the following corrects the pronoun error in this passage? The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. It made them happy.
A.) The sixth-grade students liked volunteering his or her time to read to the elderly people in the hospital. It made them happy
B.) The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. It made the volunteers happy.
C.) The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. They made them happy.
D.) The sixth-grade students liked volunteering their time to read to the elderly people in the hospital. Reading made them happy.