What are nested conditional statements used for?

Nested conditional statements are utilized primarily to establish a clear order of checks by allowing more complex decision-making processes in programming. When a condition is evaluated as true, a nested conditional can provide additional checks for different conditions that depend on the initial condition being true. This structure enables programmers to create logic that can manage multiple scenarios and outcomes by effectively building a hierarchy of conditions.

For example, within a nested conditional, you might first check if a number is positive, and only then, if that condition is true, check whether that number is even. This step-by-step checking helps clarify the flow of logic and ensures that the program evaluates conditions in a specific order, leading to desired outcomes under various circumstances.

The other options represent functionalities that do not align with the purpose of nested conditional statements. Checking for specific values (like years), creating loops for repetitive operations, or simply listing outputs do not inherently utilize the nested structure that provides the clarity and defined order that nested conditionals are designed for.