plentiful ample (Adj.) : enough; plenty of.
meagre (Adj.) : small in quantity and poor in quality.

Correct Option: B

plentiful ample (Adj.) : enough; plenty of.
meagre (Adj.) : small in quantity and poor in quality.

serene (Adj.) : calm and peaceful
distraught (Adj.) : extremely upset and anxious so that you cannot think clearly; distressed.

Correct Option: B

serene (Adj.) : calm and peaceful
distraught (Adj.) : extremely upset and anxious so that you cannot think clearly; distressed.

preserve (Verb) : save; to keep a particular quality
eradicate (Verb) : to destroy/ get rid of something; wipe out
alleviate (V.) : to make something less severe
obstinacy (N.) : a refusal to change your opinions, way of behaving, etc. when other people try to persuade you to ; stubbornness

Correct Option: A

preserve (Verb) : save; to keep a particular quality
eradicate (Verb) : to destroy/ get rid of something; wipe out
alleviate (V.) : to make something less severe
obstinacy (N.) : a refusal to change your opinions, way of behaving, etc. when other people try to persuade you to ; stubbornness

extraordinary (Adj.) : not normal or ordinary.
mundane (Adj.) : not interesting; dull; ordinary.

Correct Option: A

extraordinary (Adj.) : not normal or ordinary.
mundane (Adj.) : not interesting; dull; ordinary.

flimsy (Adj.) : difficult to believe; fragile; thin; rickety; meagre; not strong
substantial (Adj.) : not illusory; important; large in amount; considerable; strong

Correct Option: A

flimsy (Adj.) : difficult to believe; fragile; thin; rickety; meagre; not strong
substantial (Adj.) : not illusory; important; large in amount; considerable; strong