Explanation: In English grammar, subject-verb agreement is a fundamental principle that ensures the subject and verb in a sentence agree in number and person. This means that if the subject is singular, the verb must also be singular, and if the subject is plural, the verb must be plural. Additionally, the verb form changes based on the person of the subject (first, second, or third person).
For the third person singular, which includes the pronouns "he," "she," and "it," the verb form typically ends in "-s" or "-es" in the present tense. This is to indicate that the action is being performed by a single entity. For example, "He runs," "She writes," and "It flies" all use the third person singular form of the verb.
In the given sentence, "She ..... going to India," the subject is "she," which is a third person singular pronoun. Therefore, the verb must also be in the third person singular form. The present continuous tense is formed using the auxiliary verb "is" followed by the main verb in its -ing form. Thus, the correct form of the verb to use with "she" in the present continuous tense is "is."
The sentence "She is going to India" is grammatically correct because "is" agrees with the subject "she." The other options, "am" and "are," are incorrect because they do not agree with the third person singular subject. "Am" is used with the first person singular "I," and "are" is used with the second person singular "you" and with plural subjects.
Understanding subject-verb agreement is crucial for constructing grammatically correct sentences in English. It is a concept that is frequently tested in various competitive examinations, including those for civil services, banking, and law. Mastery of this concept helps in improving overall language proficiency and clarity in communication.