Answer:
Option-A
Explanation:
In the given question, since the examiner has mentioned the time that the factor the researcher should include during the development of a new drug is "the placebo". A placebo is used during the experiment as control by and its effect depend on the expectations of the patient since the placebo does not contain the active drugs.
The FDA approval, informed consent and the information are not used until the study is going on.
Thus, Option-A is the correct answer.
Atoms can join together to make molecules. A single atom is made from protons, neutrons and electrons. A molecule is a group of atoms bonded together. Atoms is some thing which can't be split
<span>Molecule can be divided into many atoms. I know you dont need this but hey it may help someone else. ooops i put it in the wrong section</span>
Answer:
Importance of polar bears. Polar bears are at the top of the food chain and have an important role in the overall health of the marine environment. Over thousands of years, polar bears have also been an important part of the cultures and economies of Arctic peoples.
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I hope this helps!</h3>