Answer:
so they dont die off. how do they protect themselves depends but mostly camouflage
B. This is because it is unclear about whether or not the bag belongs to the anxious patient or the doctor.
I would suggest saying, "I would make an excellent president because...." (List your reasonings). For "Helpful," you don't need to capitalize the first letter. Make sure you add in an "and helpful," since you're finishing off the reasons.
Canadente is spelled incorrectly. It should be "Candidate."
Lastly, I would suggest saying "have had experience...."
Yes, it is (the bottom one)