Which cell organelle has a central core of a crystalline

As somebody believing (A) that managerialism (B) is inimical (C) to professionalism, I find this theory entirely plausible (D) .

He has a voracious appetite for reading.

In each of the following questions, out of the 4 alternatives, choose the one which best expresses the meaning of the given word.

Mordant

The train will __________ in few seconds.

Even after a long discussion , none of us could ________ to a conclusion.

Select the most appropriate meaning of the idiom:

"To throw in the towel"

Choose the word that means the same as the given word.

Relinquish

Choose the correct synonym for the given word 

Impulsive 

Select the most appropriate ANTONYM of the given word in bold

Callous 

Select the sentence with the appropriate use of adverb of frequency.