Directions: Out of the four alternatives, choose the one, which can be substituted for the given words/sentence and indicate the appropriate answer.

One who is indifferent to pleasure and pain

Stoicism is a philosophy founded on the principle of remaining indifferent to pleasure, pain, and external circumstances. Stoics believe in maintaining emotional control and not being affected by things outside their control. Ascetic practices self-denial but isn't defined by indifference. Esoteric means understood by few. Sceptical means doubting.