A certain amount of (mystic) exudes his own charm.

Options

A. mysticity
B. mysticism
C. mysticly
D. No Improvement

Answer

B

Explanation

mystic (Adjective/Noun) : a person who seeks by contemplation and self-surrender to obtain unity with the Deity or the absolute, having spiritual powers.
mysticism (Noun): belief that union with the Deity may be attained through contemplation and selfsurrender.
Hence, mysticism is the right usage.