Which element of the storytelling process for UX is described here: "A hurdle that makes it difficult for your heroes to succeed on their journeys."

One retail location of Cloud Kicks has been getting complaints from shoppers about being unable to find items in the store. The general manager has asked IT to configure tablets for the sales clerks so they can move freely around the store to assist customers.
The IT team writes a functional requirement:
* Tablets running the Salesforce mobile app must allow users to access store inventory records which include current item count and item location.
Which user story should the business analyst write to describe the functional requirement?

Universal Containers is planning to implement Commerce Cloud to sell more products. The business analyst working on this project has gathered requirements and is translating them into user stories.
What should the user story focus on?

A business analyst (BA) working on a Service Cloud implementation is reviewing user stories to verify they are written effectively.
What should the BA confirm about the user stories when completing this review?

The business analyst (BA) at Universal Containers is preparing for user acceptance testing (UAT) for an Experience Cloud implementation.
Which people should participate in UAT?