Final answer:
Customer requirements in a Scrum project are documented and stored in the Product Backlog, which is managed by the Product Owner. This backlog is a dynamic document that is updated throughout the project.
Step-by-step explanation:
The customer requirements in a Scrum project are stored in the a) Product Backlog. This is an ordered list of everything that is known to be needed in the product. It is the single source of requirements for any changes to be made to the product. The Product Backlog is continually updated by the Product Owner, who is responsible for the backlog's content, availability, and prioritization. It includes descriptions of features, functions, requirements, enhancements, and fixes that represent the changes to be made to the product in future releases. During each Sprint Planning meeting, items from the Product Backlog are moved to the Sprint Backlog, which contains the tasks to be completed during the ongoing sprint. It is important to note that while the Product Owner knows the requirements, they are formally documented within the Product Backlog.