‘A’ when added as a prefix does not imply anti but an indifference or apathy e.g. ‘amoral’ and ‘immoral’.

Correct Option: C

‘A’ when added as a prefix does not imply anti but an indifference or apathy e.g. ‘amoral’ and ‘immoral’.
immoral means not moral while amoral is only someone who does not care about morals.

Enthusiasm is excitement.
Intimate is closeness or nearness.
Freedom means free

Correct Option: B

Candour means frankness,
Enthusiasm is excitement and
Intimate is closeness or nearness.

haughty is very proud and snobbish,
discreet is someone who is cautions and prudent, not showy.

Correct Option: C

Bashful means a shy person,
haughty is very proud and snobbish,
discreet is someone who is cautions and prudent, not showy.

Ubiquitous is something that is found everywhere, burdensome is thing that appears like a burden to the owner.

Correct Option: A

Ominous is a sign of something bad in future, a forboding, threat is a warning for future, ubiquitous is something that is found everywhere, burdensome is thing that appears like a burden to the owner.

Sinful is immoral , Unpopular means not liked or popular and Harsh is unmelodious .

Correct Option: A

Invidious means improper, this may cause irritation or anger.