Question

earnest means :
having a play of lustrous rainbow colors
markedly new or introducing extreme change
belonging to an early stage of technical development
characterized by a firm, sincere belief in ones opinions

Explanation:

The word "earnest" means showing sincere and intense conviction or seriousness about one's beliefs or actions. Among the options, "characterized by a firm, sincere belief in one's opinions" best captures this meaning.

Answer:

D. characterized by a firm, sincere belief in one's opinions