Probably D. It is a pretty vague fact that you can give lots of information on, you dont wont to give all your information in the thesis, but you want it to catch your readers attention.
Answer:
teachers they sometimes help
To persuade people to come to the festival
She gave assurance that she would look into my case personally.
he, being adamant, was persistent that I should be in the meeting as well.
I'm up to my ears in work so I'm afraid I can't come out tonight.
Most of the students are in favour of change to the current system and voted accordingly.
Most of his problems stemmed from the fact he had not done enough work.
share prices have taken a free fall since the beginning of the week.
hope this helps you!