At one fell swoop

Answer: Option C

Explanation:

Example : The government made amends to the family for the loss of their earning member in the war.

Answer: Option B

Explanation:

Example : I think this demand is just a red herring, please check other one.

Answer: Option D

Explanation:

Pretence means pretext, sham, excuse
Example : The New Group could, however, act as an effective stalking-horse.

Answer: Option C

Explanation:

Example : After sowing his wild oats Ravi has decided to stick to the straight and narrow path in future.

Answer: Option B

Explanation:

Example: Shikha is very popular for her above board conduct.