David W. answered 01/03/16
Tutor
4.7
(90)
Experienced Prof
"To participate: to be involved with others in doing something : to take part in an activity or event with others"
D. Watching TV news is only absorbing information (and that is important). It does not express your ideas, your questions, or your political position (although it may change them). It may or may not involve others. Notice how A, B, and C all involve others and express your opinion to them.