Select the correct form of the verb:
She _____ the right answer.

Question

Accepted Answer

Explanation:

1. **Correct Option: "knows" (Option 1)**
   - The verb "knows" is the correct form to use in this sentence because it is the third person singular present tense form of the verb "know." In English, when the subject of a sentence is a singular noun or pronoun (like "she"), the verb typically takes an "s" at the end in the present tense. Therefore, "She knows the right answer" is grammatically correct and conveys that she currently possesses the knowledge of the right answer.

2. **Incorrect Options:**

- **Option 2: "know"**
     - The verb "know" is the base form and is used with plural subjects or with the pronouns "I" and "you" in the present tense. For example, "They know the right answer" or "I know the right answer." Since the subject "she" is singular, "know" is not the correct form to use here.

- **Option 3: "is knowing"**
     - The phrase "is knowing" suggests a continuous action, which is not appropriate for the verb "know." In English, "know" is a stative verb, meaning it describes a state or condition rather than an action. Stative verbs are not typically used in continuous tenses. Therefore, "is knowing" is not grammatically correct in this context.

- **Option 4: "known"**
     - The word "known" is the past participle form of the verb "know." It is used in perfect tenses or as an adjective, such as in "She has known the answer for a long time" or "The known facts." It cannot stand alone as the main verb in a simple present tense sentence like the one given.

In conclusion, Option 1, "knows," is the correct choice because it correctly matches the subject "she" with the appropriate verb form for the present tense.