Final answer:
In Product Backlog Refinement, the team estimates the effort for backlog items, prioritizes them, and creates user stories but does not write code. It's an important part of the engineering design process, incorporating prototyping, testing, and refinement.
Step-by-step explanation:
The activities that occur in Product Backlog Refinement include estimating the effort for backlog items, prioritizing the backlog items, and creating user stories. Writing code for backlog items is not typically part of the refinement process; code writing occurs during the sprint after backlog items are selected for development. The refinement process is a critical part of the engineering design process, where the product development team works together to ensure that the product backlog accurately reflects the necessary work for the upcoming sprints.
Drawing on the principles of prototyping, testing, and refinement, the team continually improves the backlog. This could include brainstorming to identify new user stories or revising existing ones to better meet the criteria and constraints. The agile framework emphasizes the importance of feedback and revision to achieve a high-quality product.