The attitude of the Western countries towards the Third World countries is rather callous to say the least.

Answer: Option A

Unfeeling : lacking physical sensation or sensitivity.
Cursed : used to express annoyance or irritation.
Unkind : inconsiderate and harsh to others.
Passive : accepting or allowing what happens or what others do, without active response or resistance.
Callous : showing or having an insensitive and cruel disregard for others.

Synonym of Callous is Unfeeling