问题详情

Whatdoestheunderlinedword"they"inParagraph6referto？,
A.Theparticipantsinthestudy.
B.Theresearchersinthestudy.
C.Theerrorsmadeduringthestudy.
D.Thedatacollectedfromthestudy.
请帮忙给出正确答案和分析，谢谢！