Kelly Works Extremely Hard Because He Feels That This Is

Kelly works extremely hard because he feels that this is the right way to live. He saves as much money as he can, and is critical of his friends who spend their money on what he thinks are nonessential things. If he could travel back in time, in which of the following religious or cultural groups would he be most comfortable?

A) In ancient Greek culture.
B) In early Hebrew or Christian culture.
C) Among the Calvinists, an early Protestant religious group.
D) Among the Lutherans, another early Protestant religious group.