Answer:
c.cross-sectional
Explanation:
Cross-sectional study is a kind of research which compares different population groups at one specific point in time.
Here, the researcher compares three population groups (first grade, third grade, and sixth grade of elementary school). By using this method, any differences between age groups regarding reasoning ability can be related to age differences not something that happened over time.
Elizabeth Jennings was able to rise against segregation in a time that no one else in the african community had thought about it. she made her satnd against segregation in buses, in a time that the memory of the civil war and abolishment of slaverly was still fresh.
<span>c.)CBO is the correct answer</span>
Mary Anne MacLeod Trump
Is the full name
