Final answer:
Mariposa is excited to play a more laconic character, utilizing fewer words and focusing on non-verbal expression. The correct answer is A. laconic.
Step-by-step explanation:
Considering Mariposa's excitement for playing a role that emphasizes gesture and expression rather than dialogue, the answer to the question is that she is excited to be playing a more laconic character.
The term 'laconic' refers to a style of communicating that uses very few words; thus, it requires an actor to rely heavily on non-verbal cues like facial expressions and body language to convey emotion and meaning.
This is in contrast to a role with many lines where verbal communication is the primary method of storytelling. Such a character would align with the kind of challenge Mariposa is looking to tackle, as described in the question.