Answer:
d. cross-sectional study
Explanation:
In research, a cross-sectional study consists of a gathering of data from a population or a subset of the population we want to investigate at an specific point of time. In other words, the data will give us an idea of what's happening within a group in a particular moment in time.
In this example, the researcher gives 20-year-olds, 40-year-olds, and 60-year-olds a questionnaire. He wants to know if older people are calmer than younger ones. We can see that <u>he wants to know what's happening within this groups (the 20 year-olds, the 40's and the 60's) during this particular time of their life </u>and therefore determine if the 60 year-olds are calmer. Therefore this is an example of cross-sectional study.
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1. to have strange sexual behaviors
2. to have kinks or twists (curly, wavy)
The New Nation was resulted from the American Revolution against the Great Britain. The new territory would now be <span>all of North America from the Atlantic Ocean to the Mississippi River between Canada and Florida. However, the foundation did not come easy from the Founding Fathers as the first constitution, the Articles of Confederation, was proven to be weak.</span>
Answer:
The French and Indian War began in 1754 as a conflict between British and French colonists in North America. French forces and their allies relied on guerrilla tactics to fight the colonists, notes "The War That Made America," TV series website. ... Guerrilla warfare is particularly effective for forces that are outnumbered
Explanation:
