What is the most effective way to revise sentence 21?

Sentence 21:
What a young person is interested in doing for the rest of his or her life is the consideration in choosing whether he or she should pursue a most important higher education.

A. Make no change.
B. What a young person is interested in doing for the rest of his or her life is the most important consideration in choosing whether he or she should pursue a higher education.
C. What a young person is interested in doing for the rest of his or her life is the consideration in choosing whether he or she should pursue a most important higher education.


Please answer it right and asap please