what is one advantage of using primary sources when doing research on an
experiment?
a. they are written by the scientists who did the experiment.
b. they you get the main ideas faster.
c. they include the opinions of many scientists.
d. they are summaries of many scientists' work.
shirasit

Primary sources are the records written by the the scientists regarding their own experiments.

Option A

Explanation:

Primary sources are the direct or first-hand snippets written by the scientists on their own based on their experiments that would help in providing additional evidence to the research. Using primary source help in thinking critically and analytically with respect to the research.

It helps in exploring with several perspectives that would result in figuring out additional data. Primary data supports in coping with the contradictions. It acts as an evidence for the data since it is the direct resource related to the experiment.

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.