"A. Two-thirds of the team attended practice" is the only sentence that is written correctly since in this case fractions should be hyphenated, although this is slipping from convention.
What letter are you referring to? attach the whole question.
your answer would be B. themselves
The author converts joy in the excerpt by using irony in the situation of it being so hot they have to fan themselves then, ironically they start singing a song titled heatwave
D.its a flashback...foreshadowing is knowing something in the future