Step 1: Indirect to direct speech.
The given sentence uses indirect speech with "exclaimed with delight." In direct speech, it becomes an exclamatory sentence.
Step 2: Checking options.
(A) Correct — Exclamatory form matches: "What a beautiful voice!"
(B) Incorrect — word "shouted" changes the tone.
(C) Incorrect — tense changes to present.
(D) Incorrect — tense changes to future.
Step 3: Conclusion.
Correct direct speech is (A) She said, "What a beautiful voice!".