The correct answer is: E. No error
The sentence is grammatically correct. The word “objective” is a singular noun, so it takes a singular verb, “is.” The word “which” is a relative pronoun, and it is used to introduce a clause that provides additional information about the noun it modifies. In this case, the relative clause is “of the meeting which elect new office-bearers.” This clause is a subordinate clause, and it cannot stand on its own as a complete sentence. Therefore, it must be attached to an independent clause, which is the main clause of the sentence. In this case, the independent clause is “One of the objective is to elect new office-bearers.”
The two clauses are joined by a comma, which is the correct punctuation mark to use when joining two independent clauses.The other options are incorrect because they contain grammatical errors. Option A is incorrect because it uses the plural verb “are” with the singular noun “objective.” Option B is incorrect because it uses the preposition “of” twice. Option C is incorrect because it uses the relative pronoun “which” twice. Option D is incorrect because it does not have a verb.