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.
Answer:
At first you must be sure that your business will produce a profit so you should check the market of the supply and demand and make sure that you won't fold up. Also your business have to bring you joy and pleasure. You should like what you do - it is the main point. If you don't like what you do it will never work properly.
Explanation:
The answer to this question is <span>B) the President may veto Congressional legislation
President has the right to veto the proposal made by the Congress if the president believed that it does not suit his/her plan for the country. The only way for the Congress to override the veto is if they managed to convince more than 2/3 of Congress to vote with both house voting separately.</span>
Hi here you go
1. mathematics
2. trade
3. astronomy
4.a form of written communication with pictures
5.the invention of the wheel
6.the concept of time.
