Question

Helppppp againnnnnnnnn

Answer 1

A.

$5-1=\boxed{4}\\\\10-5=\boxed{5}$

Not an arithmetic sequence.

B.

$-27-(-20)=-27+20=\boxed{-7}\\\\-34-(-27)=-34+27=\boxed{-7}$

An arithmetic sequence.

Answer B.