He. His and Jenny doesn't make sense, him and Jenny doesn't make sense, and we and Jenny doesn't make sense either so it's He and Jenny are going to ride in his car.
The answer is Chins.
Plural nouns: What Are They?
The form of a word used to indicate that there are multiples is known as a plural noun. Most nouns can be made plural by simply adding -s or -es to the end.
What does a plural noun look like?
The plural noun form of "child" is "kids." Certain nouns have an erroneous plural form; for example, "child" is pluralized as "children," not "childs."
What distinguishes singular from plural nouns?
Plural nouns denote more than one, while singular nouns denote just one. If a person is by themselves, we refer to them as a "person" (plural), but if there are other persons present, we refer to them as "people" (plural).
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It seems like it would be childish
Three They are all pretty un-important to the rest of the story. Why didn't you just google this?