The correct answer is (D) unwarranted pride, ostentatious pride, about one's activities, achievements, etc.; boastful vanity. Also, excessive display of vanity; empty pomp; ostentation; extreme conceit.

Vainglory comes from Latin vana gloria (empty pride).

Examples of use:

• Vainglory can be likened to a disease that one should try to avoid catching.
• Because vainglory is so unattractive, my present friends do not have it.