A synonym for mastery might be:

instinct
involvement
expertise
bossiness

a.) it provides a clue to solve the mystery.

chapter i -- paris: september, 1792

a surging, seething, murmuring crowd of beings that are human only in name, for to the eye and ear they seem naught but savage creatures, animated by vile passions and by the lust of vengeance and of hate.

during the greater part of the day the guillotine had been kept busy at its ghastly work: all that france had boasted of in the past centuries, of ancient names, and blue blood, had paid toll to her desire for liberty and for fraternity.

hope this answer you: )!

no it who u choose to be. let no one tel u what or who to be;