What are modules in Tosca?

• A. They store test results in a separate database.
• B. Modules are not reusable.
• C. They are used exclusively for MBTA testing.
• D. The modules are Lego-like 'building blocks' that can be combined and reused to create your tests.

Answer: (D)

Modules in Tosca are Lego-like building blocks you can combine and reuse to create your tests. Each module models a part of your application under test—capturing the UI elements and the actions you can perform on them. Because they’re reusable, you can place the same Module into different TestCases, use different data sets, and update the Module once to affect all tests that use it. This approach keeps test creation scalable and maintenance light. The other options don’t fit because modules don’t store test results, they are indeed reusable, and they’re not limited to MBTA testing.