Damp squib

Answer: Option A

Explanation:

Example : I don't know why she always knit the brow at everything I do.

Answer: Option A

Explanation:

Example : My brother is at sea in maths, he can not solve even the easy problems.

Answer: Option B

Explanation:

Example: It is not necessary that we should always reply at the spur of moment in interview, we should think before answer if we are not sure.

Answer: Option B

Explanation:

Example : We should take care of the rank and file in every policy we make in national interest.

Answer: Option C

Explanation:

Example : Changes in the political system of India are gaining group because of RTI.