The. answer is B because a walrus live does not make scene.
The correct compound sentence is 'D. Walruses live in the Arctic Ocean; they are an endangered marine species,' using a semicolon to join two independent clauses.
The correctly written compound sentence is option D. Walruses live in the Arctic Ocean; they are an endangered marine species. This sentence appropriately uses a semicolon to connect two independent clauses.
Compound sentences are those sentences that contain atleast two independent clauses joined either by a comma, semicolon, or conjunction.
In comparison, sentence A is incorrectly punctuated, as it should have a conjunction or semicolon to properly join the independent clauses. Sentences B and C are not compound sentences as they do not contain two independent clauses.
The correctly written compound sentence is option D, which uses a semicolon to join two independent clauses. Other options either fail to create a compound structure or are simple sentences. Option D is clear and grammatically correct.
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