Select the most appropriate option to improve the underlined segment in the given sentence. If there is no need to improve it, select ‘No improvement’.
A historian envisions a future in which humans cannot be able to survive at all if they do not remain connected.

Options

A. will not be able to survive at all
B. not be able to survive at all
C. No Improvement
D. can be able to survive at all

Answer

A

Explanation

will not be able to survive at all