Answer: The answer is 3
Explanation: A semicolon is used when an author could've chosen to end their sentence, but chose not to. This is the case in number 3. Hope I helped!
I hope i didn’t miss anything but here are the edits!
That’s a simile
A simile is a comparison using “like” or “as”
Embryology, or the study of embryos, can help us find plenty of evidence to support the theory of evolution. For example, vestigial structures such as tails or gills in humans can be found in embryos early during their development.