What is considered one of the four major cost of quality​ categories?

The four major cost of quality categories are:

Prevention costs

Appraisal costs

Internal failure costs

External failure costs

Explanation:

Prevention  costs are incurred to ensure that products meet standard specification such that they can be seen as fit for purpose,hence the situation where customers return such goods is nipped in the bud

Appraisal costs are costs incurred to test whether products produced meet the prerequisite specification.An inspection cost is a typical example of prevention cost

Internal failure costs are costs expended in reworking and putting products in right shape when quality failure occurs in-house.

External failure costs are costs spent to remedy a quality failure situation when the goods have already been sold to customers.For instance, costs of warranties

answer; (consensus);

answer(d) the growth of consumption is likely to remain sluggish even as the economy begins to recover.;