Teachersbe sensitive to the development level of each student so as to help them better. A. can B. m

Teachersbe sensitive to the development level of each student so as to help them better. A. can B. may C. are able to D. need to

The correct choice is D. need to.

The sentence is giving advice or stating a requirement for teachers:

“Teachers need to be sensitive to the development level of each student so as to help them better.”

The other options change the meaning:

A. can → implies ability, not obligation.

B. may → implies permission or possibility.

C. are able to → similar to “can,” focuses on capability, not necessity.

The most appropriate in context is need to, expressing what is necessary for teachers to do.