Answer:
pensive
engaged in, involving, or reflecting deep or serious thought.
Step-by-step explanation:
this should give you a direct hint ✌
Answer: D) Contemplative
Both "pensive" and "contemplative" mean "to be in deep and/or serious thought". It might help to think of "pen" from "pensive" as a connection that pens are used in academic settings, which help with forming thoughts.
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