Explanation: In English grammar, tense agreement is a fundamental concept that ensures the logical consistency of a sentence. The sentence in question involves two distinct actions: Abhishek's travel to Bengaluru and his friend's current status as an IAS officer. Each of these actions requires a different tense to accurately convey the intended meaning.
The first part of the sentence, "Abhishek is going to Bengaluru," uses the present continuous tense. This tense is appropriate for actions that are happening now or are planned in the near future. The structure of the present continuous tense is "subject + is/am/are + verb + -ing." In this case, "is going" correctly indicates that Abhishek's travel is either happening now or is planned for the near future.
The second part of the sentence, "who is an IAS officer," uses the present simple tense. The present simple tense is used to describe habitual actions, general truths, or current states. The structure of the present simple tense is "subject + is/am/are + verb (base form)." Here, "is" correctly indicates that his friend's status as an IAS officer is a current and ongoing state.
It is important to note that the sentence requires different tenses to accurately describe the two distinct actions. The present continuous tense is used for the action of traveling, which is a temporary and specific event, while the present simple tense is used for the current state of being an IAS officer, which is a more permanent condition.
In summary, the correct answer is option A: "Is going, is." This option correctly uses the present continuous tense for the action of traveling and the present simple tense for the current state of being an IAS officer, ensuring proper tense agreement and logical consistency in the sentence.