I believe the answer to your question is C.
To keep the egg from drying and allows reproduction
Based on the sentence "a placebo is amedication that elicits a positive emotional response in an experimental subject", a placebo is a simulated medically ineffectual treatment for disease or other medical condition intended to deceive the recipant. the answer are: FALSE
hope this help
In my opinion its:
Both 3 and 4.
Then 2.
And last 1, but they both have equal chance. of getting injured.