Antonyms

Scarcity means a small and inadequate amount whereas abundance means a very large quantity of something which is the opposite. Hence, it is the correct option.

Caring means displaying kindness and concern for others whereas callous means showing or having an insensitive and cruel disregard for others which is the opposite. Hence, it is the correct option.

Upset means afflicted with or marked by anxious uneasiness or trouble or grief whereas content means in a state of peaceful happiness which is the opposite. Hence, it is the correct option.

Comforting means serving to alleviate a person's feelings of grief or distress whereas awful means very bad or unpleasant which is the opposite. Hence, it is the correct option.

Approve means officially agree to or accept as satisfactory whereas abolish means formally put an end to (a system, practice, or institution) which is the opposite. Hence, it is the correct option. 

Abnormal deviating from what is normal or usual, typically in a way that is undesirable means whereas customary means according to the customs or usual practices associated with a particular society, place, or set of circumstances which is the opposite. Hence, it is the correct option.

Sincerity means genuineness whereas deception means the action of deceiving someone which is the opposite. Hence, it is the correct option.

Illogical means lacking sense or clear, sound reasoning whereas rational means based on or in accordance with reason or logic which is the opposite. Hence, it is the correct option.

Reveal means make previously unknown or secret information known to others whereas conceal means not allow to be seen; hide which is the opposite. Hence, it is the correct option

Doubtful means feeling uncertain about something whereas obvious means easily perceived or understood; clear, self-evident, or apparent  which is the opposite. Hence, it is the correct option.

Depressed means in a state of general unhappiness whereas elated means make (someone) ecstatically happy which is the opposite. Hence, it is the correct option.

Upgrade means raise something to a higher standard whereas means reduce (something) in quality or value; degrade which is the opposite. Hence, it is the correct option. 

Inferior means lower in rank, status, or quality whereas eminent (of a person) famous and respected within a particular sphere means which is the opposite. Hence, it is the correct option.

Friendship means the state of being friends whereas malice means the desire to harm someone; ill will which is the opposite. Hence, it is the correct option.

Discord means disagreement between people whereas harmony means the state of being in agreement or concord which is the opposite. Hence, it is the correct option.