I’m pretty sure it’s either A or D
Every recursive function should have an exit criterion (=handling the base case) to exit the recursion.
Without it, it wil recurse forever, until system resources run out (typically the call stack will overflow and your program will crash).
The answer is Method
A method is a code block of statements that perform a task.
By calling a method, a program causes statements to be executed. In C#
programming, every instruction that is executed is performed in the context of
a method. Technically, it is how behaviors are implemented in C# and are
enclosed in parentheses separated by commas
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