D.......the others deal with muscles and tendons.
Answer:
a) provides structure to the Trachea. b) hairs on a cell that help it move around. C) Exchanges oxygen and carbon dioxide molecules to and from the blood stream
this is called acquired immunity
Answer:
I believe the answer to this question is C or "Always share personal information online".
Explanation:
The reason for this is because the rest make sense to protecting your information. The third answer sounds a little off. This is because you are giving your information to strangers which can cause hackers to get into your accounts. This is why it is not a tip for internet safety.
Hope this helps! Have great rest of your day!