Services can bebecause the real people who provide them may vary in their abilities and motivations, or even their moods, resulting in differences in perceived quality.

Inconsistent.

Explanation:

Services can be inconsistent because the real people who provide them may vary in their abilities and motivations, or even their moods, resulting in differences in perceived quality.

In Business and customer relationship management, the consistency of a service is solely dependent on the individual saddled with the responsibility of providing the service.

For instance, if Staff X isn't happy about something or is depressed, the staff is most likely to act lukewarm or annoying towards the service takers, therefore making the service inconsistent in comparison with other staffs and days.

answer; test-retest;

answer; is the sum of all individual demands curves;