Explanation:

In this sentence, the correct answer is "will help". Let's break down the sentence and explain why "will help" is the correct answer.

Subject and Verb Agreement:
The subject of the sentence is "she", which is a third-person singular pronoun. When using third-person singular pronouns, we use the base form of the verb without any additional inflections. Therefore, we use the base form "help" instead of "helps" or "helping".

Future Tense:
The word "will" indicates the future tense in English. It is used to express actions that will happen after the present moment. In this sentence, the action of "helping with homework" will occur in the future.

Use of "Will" as an Auxiliary Verb:
In English grammar, "will" is often used as an auxiliary verb to form the future tense. It is followed by the base form of the main verb. In this sentence, "will" is used as an auxiliary verb to form the future tense of "help". Hence, "will help" is the correct usage.

Additional Context:
Since the sentence mentions "homework", it implies that the action of helping will occur at a later time when the homework needs assistance. It indicates a future event and aligns with the usage of "will" to express the future tense.

Therefore, the correct answer is "will help" as it follows the subject-verb agreement, uses "will" to indicate the future tense, and employs "will" as an auxiliary verb to form the correct verb structure in the sentence.