According to their ethical standards, what are medical researchers required to give to patients before they parti
research studies?
better treatments than those available for patients who are not part of the research
o a fair amount of money for participating in medical research
the right to decide whether or not they want to participate in the research
opportunities to communicate with other patients in the research

Medical researchers had to give the right to decide to the patient about their participation in the research.

Explanation:

According to the regulation of medical research, the researchers should follow certain ethics regarding their research. Medical research involves the participation of the people who are considered as subjects of research.

While conducting the research the researcher must follow some ethical rules towards the patients. The most important ethical standard under the article 20, 21 and 22 is to declare the Helsinki, through which the researchers are needed to take grant the right to make decision whether they would like to participate in the research or not.

answer: proteins

explanation: complement is   system of circulate in the blood in a inactive form

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