Answer:
House Captains maintain a high level of commitment throughout the year to promote sport events, encourage and motivate teams as well as assist the PE Teacher and school staff in sports related matters. The Vice House Captains encourage and motivate their House members.
I would go with the last one, the way its described seems scary and uninviting. and for instance maybe if you were somewhere that you enjoyed or wanted to be the bug would bother you, but in this case they don't seem like an main concern.
Answer:
I believe the answer is d.
The third one is the one that uses capitalization properly