Final answer:
The call stack is a data structure that keeps track of method calls in a program.
Step-by-step explanation:
The call stack is a list of all the method calls at a specific point in the execution of a program.
It is a data structure that helps keep track of the order in which methods are called and allows for their execution.
When a method is called, it is added to the top of the call stack, and when it finishes executing, it is removed from the stack.