Amethod of a problem-solving that focuses on the units used to describe matter , often using conversion factors is called a..

Dimensional analysis.

Explanation:

Dimensional analysis is a tool that enables the prediction, inspection and adaptation of the physical units that are used to solve equations. In dimensional analysis, we apply the fundamentals of algebra to determine in which unit of measure any magnitude should be expressed, in order to ensure homogeneity between the quantities.  In other words, dimensional analysis is a problem solving method that focuses on the units used to describe matter, usually using conversion factors.

b is the correct

b

explanation:

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