The purpose of ethical guidelines for the handling of experimental subjects is to ensure the safety and well-being of all living creatures in an experiment. Thus, the correct option is D.
What are ethical guidelines?
Ethical guidelines may be defined as those criteria or codes that demarcate what activities are morally respectable and inappropriate.
Ethical guidelines always deal with the well-being and safety of all living entities across the earth's surface. The major objective of such guidelines is to protect each living organism, in the same way, that its life is too, precious.
Therefore, the correct option for this question is D.
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