Programming in C# — Question 137

You need to create a method that can be called by using a varying number of parameters.
What should you use?

Answer options

• A. enumeration
• B. Language-Integrated Query (LINQ) query expressions
• C. interface
• D. optional parameters

Correct answer: D

Explanation

The correct answer is D, as optional parameters allow you to define a method that can be invoked with a varying number of arguments. Options A, B, and C do not provide this flexibility; enumerations and interfaces serve different purposes in programming, while LINQ is specifically for querying data.