Answer:
"Helps fight off infection" protein doesn't do that. Your white blood cells is what fights that for you.
I mean that’s a really hard question because our pay creates who we are today I honestly have no idea how to answer that question it will always affect us and other people
Self report test are useful because they have good in reliability in which results that are obtain are reliable and are considered valid. Another thing which made them useful and be of advantage is that they don't cost too much and are considered to be inexpensive than other psychological tests.