Programming in C# — Question 87

You are developing an application.
You need to declare a delegate for a method that accepts a string as a parameter, and then returns a string.
Which type of delegate should you use?

Answer options

• A. Func<string, string>
• B. Action< string, string>
• C. Func< string>
• D. Action< string>

Correct answer: A

Explanation

The correct choice is A, Func<string, string>, because it is specifically designed for methods that take one string argument and return a string. Option B, Action<string, string>, is incorrect because Action does not return a value. Options C and D also do not meet the requirement since they either don't take any parameters or only take a single string parameter without returning a value.