Final answer:
Excessive sleep and lethargy are not distinguishing factors of manic episodes.
Step-by-step explanation:
The correct answer is c) Excessive sleep and lethargy. Excessive sleep and lethargy are not distinguishing factors of manic episodes. Manic episodes are characterized by an elevated mood or irritability, increased energy and activity, and grandiosity or inflated self-esteem. These symptoms are commonly seen in individuals with bipolar disorder during manic episodes.