Correct answer: D). Most scientists do not use the metric
Scientific investigation is the way in which the researchers and scientist use an approach to answer a question about the scientific phenomenon that occurs in nature. They use a systematic process that involves measurements, formula, and observations in order to test or modify the hypothesis. During their research, they investigate and perform investigation according to international standardization, which is the same in different parts of the word.
Hence, the correct answer would be option D.