Which meaning of the root alter define the word alternate as it is used in this sentence? because the traffic was so heavy, they had to take an alternate route to school. varied changing other shape?

Other

Explanation:

The root "alter· has mainly two meanings different "to change, alter, vary" which comes from Old French, and "the other (of the two)" whose origin comes from   Latin. In the sentence, "Other" is the one that helps define the word "alternate" as this word is used when there are two options, and one of them is designated to take the place of the other, as it is in the case of the sentence: They had to take other route.