Answer:
Option A
Explanation:
Robert graduate research project didn't state that all psychology students and classes are the sample he wants to use for his research. He only targets the Psychology students as his participants not sample. So the intuition from the question eliminates options B and C and the conclusion that can be drawn from the question above is that all the students in the psychology classes represent a portion of the sample Roberts wants to use to carry out his research just that he randomly chose some to be his participant.
The correct answer is C, They gave the national government control over domestic affairs of the states!
Answer: yes thats corrects
Explanation:
The simple reason why prices of a commodity go up and down is because if more people want to buy a particular stock (demand) than sell it (supply), then the price moves up.
The price of a commodity will go down if more people wanted to sell a stock than buy it, there would be greater supply than demand.
<h3>What is economics?</h3>
Economics can simply be defined as a social science which studies human behavior in relation ends and scarce means which have alternative uses
So therefore, the simple reason why prices of a commodity go up and down is if more people want to buy a particular stock (demand) than sell it (supply), then the price moves up.
Complete question:
What makes price go up and down?
Learn more about demand and supply:
brainly.com/question/4804206
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