A, C, D are common nouns...common nouns are the opposite of proper nouns...Proper nouns are words that need to be capitalized, such as America or England. Common nouns are words that dont need to be capitalized like boy or water. Hope i helped. :)
The common nouns in the sentence are 'ship' and 'seas'. 'England' and 'Mayflower' are proper nouns, while 'rough' is an adjective. Therefore, the correct choices are C. ship and D. seas.
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