<span>Declining skill or fitness level from taking a break from exercise is formally referred to as D. reversibility.
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When you go for an extended period of time without using muscles, a process called <em>atrophy</em> will cause your muscles to shrink and weaken.
Lena asks her co-worker for a dance
Answer:
The clinical trial show efficacy and safety.
Explanation:
There are tests that are done to make sure that the drug, vaccine, etc. works. The effectivness is called efficacy. In order for a drug to be apporved it has to be safe and effective. If it fails this test, it is not approvable.
