Topic: Subject Verb Agreement,

Best Answer Explained in Below-:

The correct answer is C: "Aziz as well as Fahim knows it." This sentence is grammatically accurate because it correctly employs the subject-verb agreement rules in English. The phrase “as well as” does not compound the subject; rather, it serves as additional information about the primary subject, which is “Aziz.”

In this construction, we treat “Aziz” as the singular subject of the sentence. Therefore, the verb must also be singular to match the subject. That’s why “knows” is used instead of “know,” which would be appropriate if “Aziz and Fahim” were the main subjects (as in choice A or B).

Looking at the other options:
- A: "Aziz as well as Fahim know it" uses the plural verb “know,” which is incorrect due to the singular subject.
- B: "Aziz and Fahim are know it" contains both grammatical errors—“are” is misused, and “know” should be “knowing” if it followed "are" in a correct structure.
- D: "Aziz and Fahim are know it" also fails for the same reasons as B.

Thus, option C is the best choice, demonstrating both correct subject-verb agreement and appropriate usage of the phrase “as well as.”