Recent psychological studies indicate that if children associate with and play with other children, they will experience fewer psychological problems and develop quicker socially than children that lead relatively isolated lives.
(A) play with other children, they will experience fewer psychological problems and develop quicker socially than
(B) play with other children, they experience fewer psychological problems and develop quicker socially than do
(C) played with other children, they experienced fewer psychological problems and develop quicker socially than will
(D) play with other children, they will experience fewer psychological problems and develop more quickly socially than do
(E) played with other children, they have experienced fewer psychological problems and have developed more quickly socially than do
Answer : Should be (D) if children associate with and play with other children ( present tense ), they will experience fewer psychological problems and develop more quickly socially than do ( future tense )