Correct is irrefutable, therefore it's most likely D. Correct
also has no varying degree, only one set degree, which is well... correct. You can't get more right than the absolute.
Sperm are the only human cells to have flagella.
Answer:
B. They can work alone or together to discourage negative behavior
Explanation:
A bystander can help others by discouraging people from hurting others or from breaking the rules. However, it is not helpful to do nothing. Therefore, A and C must be incorrect. On the other hand, B is correct because bystanders can help people either by themselves or with other bystanders.
A. is the answer I had this question in a test before and got it correct!