as a student why is it important to be familiar with the characteristics, strengths, weaknesses and kinds of quantitative research?

Because knowledge of quantitative research is very important for any student, not only for researches.

Even if a student does not want to become a quantitative researches, the student is likely to find quantitative research in his life, specially if the subject is related to science or engineering. It is important to know the strenghts, weaknesses, and characteristics of this type of research in order to be able to interpret the data well, and to be able to spot issues or error.

c- companies fail to take environmental protection into account. i think

c. reserves power to the states and people