Final answer:
The statement that function templates allow for a single function definition to work with many data types is true. They are used in programming to create versatile functions that can handle various data types using placeholders.
Step-by-step explanation:
Function templates do indeed allow you to write a single function definition that can operate with many data types. This statement is True. In programming, particularly in the context of C++ and other similar languages, function templates provide a way to create functions that can work with any data type, without the need to write multiple versions of the same function for different types.
For example, a function template allows you to create a generic 'add' function that can add two numbers together, regardless of whether they are integers, floats, or any other numerical type that supports addition. This is achieved by defining a template with a placeholder type, often represented as T, which is then replaced with the actual data type when the function is used.