As a Test Analyst on a project using the V-model lifecycle model, you have been...

Use cases are a test basis that describe the interactions between the users and the system in terms of scenarios. Use cases capture the functional requirements and the expected outcomes of the system. By visiting locations, spending time with expertusers, and walking through their scenarios, the test analyst is using use cases as the test basis. However, use cases do not provide enough information to validate that the transactions are realistic, such as the prices, discounts, taxes, and fees involved in the car buying process. This information is still missing and needs to be obtained from other sources, such as the business rules or the data model. References =

ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst1, page 2

Use Case Testing - Tutorialspoint2, section “Use Case Testing”

Use Case Testing: A Complete Guide3, section “What is Use Case Testing?”