Philosophy very often proceeds through

A) faith.
B) making a series of statements without supplying underlying reasons.
C) disagreement.
D) achieving universal consensus.

Philosophy

The field of inquiry into the big questions about such matters as the meaning of life, what we know, what we should believe and value, and how we should live.

Disagreement

A situation where individuals or groups have conflicting opinions, ideas, or interests.

Universal Consensus

A widely or globally accepted agreement or belief among members of a community or group.