Final answer:
Colons are most commonly used before lists, quotations or summations, and also to separate titles from subtitles. Semicolons, on the other hand, are used to separate two closely related but independent clauses. However, semicolons are not typically used before a quotation.
Step-by-step explanation:
The question is asking to identify the correct usage of colons and semicolons in English grammar. A) Colons are used to separate two related but independent clauses. This is incorrect as a semicolon, not colon, is often used to separate two related, independent clauses. B) Colons are used before a quotation. This is generally correct, as a colon can introduce a quotation as well as lists, summaries, and examples. C) Semicolons are used to separate two independent clauses. This is correct, where the two clauses are closely related in topic or context. D) Semicolons are used before a quotation. This is usually incorrect. Usually, a comma or a colon is used before a quote, but semicolon is not.
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