Choose the correct sentence.

Correct option is D

The correct answer is (d) Sam is going to buy some groceries.

Explanation:

• In this sentence, the present continuous tense is correctly used to indicate a future plan. The structure of the present continuous tense is subject + is/am/are + verb-ing.

• "Going" is the present participle, indicating that Sam has a plan to buy groceries in the future.

• "Sam is going to buy" expresses a planned action that will happen soon.

Grammatical Rule Used:

• Present Continuous Tense: Used to describe an action that is happening currently or will happen in the near future.

• Structure: Subject + is/am/are + verb-ing

• Usage: For actions happening now or for scheduled future plans.

Meanings of other options:

• (A) Sam have gone to buy some groceries – Incorrect; "have" should be "has" for third-person singular.

• (B) Sam had going to buy some groceries – Incorrect; "had going" is grammatically wrong.

• (C) Sam be going to buy some groceries – Incorrect; "be" should not be used with "Sam" in this context.