Sodium is preferred over potassium in industrial applications because

A. sodium salts are easily decomposed.

B. potassium oxidizes more slowly in air.

C. sodium is produced more economically.

D. potassium has a higher melting temperature

The answer is c got it right

C is the right answer - Sodium is preferred over potassium in industrial applications because it is produced more economically. There are a variety of reasons why sodium is preferred, however, including that it is a slightly safer material, however none of the other possible answers listed are legitimate reasons.