Which of the following functions of marketing involves sorting products according to their size and quality, to reduce their need for inspection, and sampling?
a. the buying function
b. the standardization and grading function
c. the storing function
d. the market information function
e. the risk-taking function

b. The standardization and grading function

Explanation:

Based on the information provided within the question it can be said that the function of marketing that does this is the standardization and grading function. This helps the customers with buying and selling of goods by sample or description. In other words by sorting them by a specific size and quality so that customers already understand what it is and do not have to bother with a detailed assessment.

you have to put the parentheses like this:

in fact, you have to perform the operation inside parentheses first, and then proceed in order: