Answer:
a person paying for a service such as a haircut
Explanation:
a consumer is someone who buys things, I'm pretty sure
"You are immune to the virus so it is safe for your toddler to receive the vaccine at this time"
Alcohol tolerance may lead to (or be a sign of) alcohol dependency
Answer:
No; the study is based on a volunteer sample, which may be very different from a randomly selected one.
Explanation
Her plan cannot be effective because she could base her own judgenent on samples that was randomly selected for consideration.
Answer: Anxiety around crowds can happen to people who have issue's with claustrophobia. It can also happen to people who are not comfortable around a crowd of people. Being shy however, is different. People can be shy around a crowd of people, but they can grow out of it or they can make a change to not feel as shy.
I hope this is helpful. :)