Answer:
Option B is correct.
The common difference of the arithmetic sequence is,

Explanation:
Common difference(d) states that take any pair of successive numbers, and subtract the first from the second.
Given the arithmetic sequence:
1/4 , 3/8, 1/2...
⇒
= 1/4,
,
and so on..
By definition of common difference

and so on..
⇒

Therefore, the common difference of the arithmetic sequence is,
