Answer:
The 2nd and 3rd are right
Explanation:
I took the same quiz
Answer:
B). A Cross-sectional research design.
Explanation:
A cross-sectional research design is demonstrated as a kind of observation study that involves the study and analysis of a representative subset from the population at a particular point of time.
In the given example, Tucker is employing 'cross-sectional research design' as he selects a representative subset('a group of 5-year-olds, a group of 10-year-olds, and a group of 15-year old) from the population at the same time for study and analysis(by interviewing them) . This implies that Tucker adopts a '<u>cross-sectional research design</u>.'
Answer:
Community helpers are important people whose job is to help others. Everyone who lives in a community can be a community helper. Some examples of community helpers are grocery store clerks, teachers, firefighters, paramedics, police officers, and bakers.
Explanation:
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