Correct Answer: A and B
Explanation: Error 1: “Collection” is a collective noun (one collection) and is singular, so the verb should be “was shelved,” not the plural “were shelved.” Error 2: A comma cannot connect two complete sentences. You need a period, semicolon, or conjunction like “and” or “so” to join them properly. For ESL: The subject is “collection” (singular), not “books” (plural).
Correct Answer: A and B
Explanation: Error 1: “Collection” is a collective noun (one collection) and is singular, so the verb should be “was shelved,” not the plural “were shelved.” Error 2: A comma cannot connect two complete sentences. You need a period, semicolon, or conjunction like “and” or “so” to join them properly. For ESL: The subject is “collection” (singular), not “books” (plural).