[Grammar] The quality of life __ with better facilities and a significant increase in the workf

[tahasozgen]

The quality of life __ with better facilities and a significant increase in the workforce behind the services.

A) can improve
B) improves
C) had been improved
D) improved
E) can be improved

My answer is A. Key depicts E. improve is verb. The quality of life is subject, so it should be active form. How can you conclude it as a passive? Thanks in advance.

 

[Rover_KE]

I can accept all those options as grammatical.

Which is best depends on the wider context.