Step 1: Recall the rule for forming a negative sentence in the simple past tense. The correct structure is:
did not + base form of the verb.
Step 2: Evaluate each option using this rule:
- (a) — is in the positive form, which contradicts the requirement of a negative past sentence.
- (b) — does not follow the correct structure of did not + base verb.
- (c) — uses a double past form, which is grammatically incorrect.
- (d) — correctly uses did not + base verb, making it grammatically accurate.
Step 3: Therefore, the correct answer is (d).