let sleeping dogs lie

Options

A. dogs can raise tempers
B. do not allow dogs to stand
C. prevent dog mobility
D. do not bring up an old controversial issue

Answer

D

Explanation

let sleeping dogs lie to avoid mentioning a subject or something that happened in the past, in order to avoid any problems/arguments . I know I should report the accident but I rather let the sleeping dogs lie. The best option is do not bring up an old controversial issue.