Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, Select No improvement.
They had walked miles to take a dip at the confluence of the Rivers Ganga and Yamuna.

Options

A. a) are walking miles to take a dip
B. b) walk for miles to take a dip
C. c) had walked miles taking a dip
D. d) No improvement

Answer

B

Explanation

walk for miles to take a dip