Final answer:
The assessment finding that could explain the client's weight gain and hunger is option B: The client started taking dexamethasone (Decadron) daily.
Step-by-step explanation:
The assessment finding that could explain the client's weight gain and hunger is option B: The client started taking dexamethasone (Decadron) daily.
Dexamethasone is a corticosteroid medication that can cause weight gain and increased appetite as side effects. Corticosteroids can alter the body's metabolism and promote weight gain by increasing fat deposits and reducing muscle mass. Increased appetite is a common side effect of corticosteroids, leading to constant hunger.