Answer:1%
Explanation:
The correct answer is less than 8% of DNA is active. But here's only 3options are available so the answer is 1%. Other DNA is in an inactive form. Only 8% of DNA is performing functions of the body actively.
Answer: state the problem or observations
Explanation:
<span>B) The volcanic gases released from the deep sea vents are similar to those released into the early atmosphere.</span>
The statement that explains why randomized controlled trials are often "double blind" is as follows: to decrease bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not (option B).
<h3>What is a double blinded experiment?</h3>
Double-blinded experiments are forms of scientific testing in which some information is withheld from two different parties.
In summary, neither the tester nor the subjects tested know which are the control items and which are the test items.
A double blinded is conducted to reduce or eliminate bias between the participants and researchers.
Therefore, the statement that explains why randomized controlled trials are often "double blind" is as follows: to decrease bias by ensuring both the participants and researchers do not know who is receiving the treatment and who is not.
Learn more about double-blind at: brainly.com/question/5303449
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Yes sir or ma’am have a good night
