Use-Cases are scenarios that describe

o How software is to be used in a given situation.

o How CASE tool will be used to construct thesystem.

o To build plan for a software product.

o The test cases for a software product.

Answer: Use - cases are scenarios that describe how software is to be used in a given situation.

Explanation:

Use-cases has multiple path that can be used by the users at one time and it basically described how software can be used in a given situation. A use case scenarios is a single path by the use-case. There are two types of use cases:

system use cases and business use cases. Use cases are basically used in a system to identifies and analysis of system software requirements.