Which option is the correct plural form of this sentence: "A tiger is a wild animal."?

A noun is a part of the sentence, used to identify a person, place, animal, or thing. A singular noun is used to refer to one person, animal, place, or thing, while a plural noun is used with more than one. The plural form of 'tiger' is 'tigers', and that of 'animal' is 'animals. 'Are' is used with plural form, so 'is' will be replaced by 'are'. Thus, the plural form of the entire sentence given in the question is, "Tigers are wild animals."