Step 1: Understanding the Concept:
This question focuses on the core rules of Subject-Verb Agreement.
In English, a singular subject must be paired with a singular verb, and a plural subject must be paired with a plural verb.
A common source of error is the "Intervening Phrase," where a plural noun (like "players" or "boys") is placed between a singular subject and the verb, confusing the speaker.
Step 2: Detailed Explanation:
Let's evaluate the grammatical structure of each choice:
Option (A): "Neither of the boys were present."
- The true subject is the pronoun "Neither", which is strictly singular. It refers to "not one and not the other."
- Therefore, it requires the singular verb "was." The presence of "boys" (plural) does not change the subject's number.
- {Correct form:} Neither of the boys was present.
Option (B): "Each of the students have a book."
- The word "Each" is a distributive pronoun that refers to members of a group individually. It is always singular.
- It requires the singular verb "has."
- {Correct form:} Each of the students has a book.
Option (C): "One of the players is injured."
- The true subject is "One" (singular). We are talking about only one individual person among a group of players.
- The verb "is" is singular and matches the subject "One" perfectly.
- This sentence is grammatically correct.
Option (D): "She do not like coffee."
- "She" is a third-person singular pronoun. In the simple present tense, it requires the verb "does."
- {Correct form:} She does not like coffee.
By applying the rules of subject-verb agreement, we find that only Option (C) maintains the correct singular-to-singular relationship.
Step 3: Final Answer:
The grammatically correct sentence is option (C).