7377. Grandfather has been getting feeble of late.

✅ The correct answer is option B.
Tall : of great or more than average height, especially (with reference to an object) relative to width.

Weak : lacking the power to perform physically demanding tasks; having little physical strength or energy.

Diseased : suffering from disease.

Small : of a size that is less than normal or usual.

Feeble : lacking physical strength, especially as a result of age or illness.

Synonym of Feeble is Weak