in my opinion the answer should be
D- enthusiasm.
Answer:
There is a high positive correlation between sleep and exam performance.
Explanation:
The concept of correlation indicates an association, that is to say, it is used for measuring how much two variables relate to each other. The 3 results of a correlational study are positive, negative, and no correlation. A positive correlation takes place between 2 variables that can increase or decrease together. In this case, the more students sleep, the better they performed at their exams.
Answer:
The silk road is more important.
Explanation:
The silk road was a trade route that connected East Asia, the middle east, European continent, and the African continent.
The trade routes was named "silk route" because it's popular among Chinese merchants in the past to distribute their silk product.
That's being said, the route itself is more important than the production of silk. The majority of the wealth that generated by Chinese empire did not came from silk alone. Products such as tea, porcelain, medicine, weapons, tomes, and herbs that sold by the Chinese merchants on this route brought larger amount of wealth for the empire.
