7376. She leaned back, feeling enervated.

✅ The correct answer is option D.
Disheartened : having lost determination or confidence; dispirited.

Confused : (of a person) unable to think clearly; bewildered.

Saddened : cause to feel sorrow; make unhappy.

Weakened : make or become weaker in power, resolve, or physical strength.

Enervated : make (someone) feel drained of energy or vitality.

Synonym of Enervated is Weakened