Answer:
D
Explanation:
I say D because all of the other options are physical and environmental.
Answer:
If it's too cold, or too hot (-40 and 400d) We wouldn't be here. The sun is in the perfect place, so we don't freeze, or burn.
Answer:
Placebo effect
Explanation:
That is usually used in research, using the Placebo-controlled group.
In the last option, if by e you meant eye than the correct answer would be d. OD - right eye
The answer should be B) It flushes excess hormones out of the body.