The answer would be to reduce the factors or the probability of such problems occurring, as this avoids increasing the scale.
Explanation:
To reduce the scale of any type of problem, it is first necessary to know what is the root of the problem or what causes it; In this way, probability tests are carried out evaluating each of the possible hypotheses or causes.
No, You should use evidence in all of your paragragps EXCEPT for in your intro and conclusion. If you use all the evidence in the first one then the reader will not want to read it anymore.