The selection of an appropriate inventory cost flow assumption for an individual company is made by:

a. the external auditors

b. the SEC

c. the internal auditors

d. management

d. Management.

Explanation:

Option a and b are incorrect because external parties of a business (the external auditors, management, suppliers) can not decide on the company's internal affairs.

Option c is wrong because the auditor's task is to inspect the item, not making a decision.

Management has the complete authority of making any internal decision of an organization.

Therefore, option d is the answer.