Answer:
You will need to write a introductory sentence
I can't remember I had this question on my test
The answer is for instance. This is the answer because the term "for instance" is sometimes used to give an example. In the paragraph, for instance is used to give an example of how cuckoos mimic other animals.
When I sharted in the middle of class it was very traumatizing...
i believe the answer is A. sorry if it is incorrect.