Step 1: Understanding the Concept:
This question tests subject-verb agreement with indefinite pronouns like "each" and "every."
Step 2: Detailed Explanation:
The subject of the clause is "Each." The phrase "of us" is a prepositional phrase modifying the subject. Indefinite pronouns like "each," "every," "everyone," and "anyone" are always singular.
Therefore, the subject "Each" requires a singular verb.
The original sentence uses the plural verb "were," creating a subject-verb agreement error. The correct verb must be the singular form, "was."
Option (D) correctly pairs the singular subject "Each" with the singular verb "was."
(A) Incorrect plural verb "were."
(B) Changes the meaning and structure of the sentence into a fragment.
(C) Ungrammatical.
(E) Awkward phrasing and changes the meaning.
Step 3: Final Answer:
The subject "Each" is singular and requires the singular verb "was."