Answer:
C). Whining.
Step-by-step explanation:
The word 'querulous' is employed as an adjective to denote 'an often complaining or suggesting a complaint in expression.' In the given sentence, the most adequate denotation of this word would be 'whining' to connote that if Emma wears a leather jacket along with her spiked pink hair, her father would express a complaint or fretful reaction to this. Thus, option C is the correct answer.