Step 1: Understanding.
Passive: "I was given this gift by Uma."
Active: Subject (Uma) + verb (gave) + object (me).
Step 2: Checking options.
(A) Wrong — changes meaning.
(B) Wrong — incorrect form.
(C) Wrong — incomplete sentence.
(D) Correct — "Uma gave me this gift."
Step 3: Conclusion.
Correct answer is (D) Uma gave me this gift.