Answer: Inconsistency
Step-by-step explanation:
The inconsistency is the term which is used to refers to the difference between the different types of ideas and services which is provided to the people depends upon their capabilities and the performance.
According to the given question, The Inconsistency is one of the unique elements that best illustrating the given example about the services as Waded is received a help for picking out the new printer.
On the other hand, Cheryl is one of her roommate and when she visit the Best Buy she does not provide any type of help. So, that is why based on the given situation is basically refers to the inconsistency in the services that is provided by the Best Buy.
Therefore, Inconsistency is the correct answer.