A. Subject "the effort" requires singular verb "is" not are. Hence, A is not correct.
B. Changes the subject and modifier "involved in the memorizing and doing countless drills" are nor parallel and awkward. Hence, B is not correct.
C. with memorizing and in doing countless are nor parallel. C is not correct.
D. As like B, D is not parallel and the word memorization is not appropriate. Hence, D is incorrect.
E. It fulfills all the necessities. Hence, E is the
...
B. Changes the subject and modifier "involved in the memorizing and doing countless drills" are nor parallel and awkward. Hence, B is not correct.
C. with memorizing and in doing countless are nor parallel. C is not correct.
D. As like B, D is not parallel and the word memorization is not appropriate. Hence, D is incorrect.
E. It fulfills all the necessities. Hence, E is the
...
.jpg)
