Answer:
Cohort study
Explanation:
A cohort study is a longitudinal studio (which mean a group is observed through time) where the sample is a cohort (people who share some characteristics) and they are used to identify factors that might contribute to a particular condition, illness or disease.
In this case, the sample was made of people who <u>shared a common characteristic: being volleyball players</u>. This study was used to identify how <u>the use of sunscreen would affect the skin in terms of damage.</u>
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Therefore, we can say that this is an example of cohort study.
15/20=0.75
if we said that each ( child = 0.75 adult )
20 total children num - 9 children in the elevator = 11 children not in the elevator.
11 children * 0.75 adult = 8.25 adults.
that is the math, in real life 8 adults can get in with 9 children.
hope that helps!
STD stands for a Sexually Transmitted Disease
A.) Diversity. this is a difference between things.
<span>(the state of having people who are different races or who have different cultures in a group or organization) from dictionary</span>
