Perfect or highly accomplished
-
impropriety
-
sinister
-
consummate
-
slovenly
C
Correct answer
Explanation
"Consummate" means complete or perfect, especially referring to skill or accomplishment. This matches the definition given. "Impropiety" means improper behavior, "sinister" means threatening or evil, and "slovenly" means messy or careless - none of which mean perfect or accomplished.