Identify the sentence in which an adverb clause is underlined. A garden snail may be the slowest animal of all. Giraffes which are animals with very long legs can run a little faster than 30 miles per?

The sentence with an adverb clause is the second one: "Giraffes which are animals with very long legs can run a little faster than 30 miles per." The adverb clause "which are animals with very long legs" provides additional information about giraffes, describing their characteristics.