Which of the following sentences has both a compound subject and a compound object
a. john and his wife danced and sang.
b. jane and liza love books and music.
c. helen and her children are going to the zoo.
d. amy and paul watched television before bed.

B. Jane and Liza love books and music.

A compound subject will have two nouns and always be connected by one of four coordinating conjunctions—and, or, neither, nor.  The same thing applies to a compound object.  When looking at the possible options for this question, the possible response that may have confused you is option “A.”  However, even though option “A” has a compound subject, it does not have a compound object.  What may throw you off is the conjunction “and” between “danced” and “sang.”  In this particular option, though, “danced” and “sang” are verbs, and because verbs cannot be objects, we know these two words are not compound objects.

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