She handled the machine with deft fingers.

Answer: Option A

Deft : neatly skilful and quick in one's movements.
Clumsy : awkward in movement or in handling things.
Sturdy : (of a person or their body) strongly and solidly built.
Delicate : very fine in texture or structure; of intricate workmanship or quality.
Quick : moving fast or doing something in a short time.

Antonym of Deft is Clumsy