Question

is emotional pain necessary for a meaningful human life?
can a society be morally justified if it eliminates choice and memory?
is ignorance ever ethical if it prevents suffering?

Explanation:

These questions deal with philosophical inquiries about human life, morality, and ethics. Philosophy is a subfield of Arts, and these questions explore fundamental philosophical concepts related to the meaning of life, moral justification, and ethical considerations of ignorance.

Answer:

The subfield that best applies is Philosophy (under Arts).