Answer:
B. She should randomly select campers from the entire camp.
Step-by-step explanation:
We are given that,
<em>Dee wants to estimate the percentage of campers at the camp who ride a bike at least once a week.</em>
So, according to the options, we have,
A. She should select all of the campers in her bike club.
This would not provide correct estimate as there may be other people who ride their bike at least a week.
C. She should select campers that she sees riding their bikes on the weekend.
This would not provide correct estimate as there may be people who ride their bikes on week days.
D. She should randomly select some of the campers that she sees riding their bikes to school.
This would not provide correct estimate as there may be people who do not ride the bike to school but to some other places.
So, she have to select the bikers randomly to get the correct estimate.
Thus, option B is correct.