Final answer:
The statement that library functions are built into the programming language and can be called any time they are needed is true. These functions allow for common tasks to be performed efficiently and consistently.
Step-by-step explanation:
True or False: Library functions are built into the programming language, and can be called any time they are needed. The answer to this question is true. Library functions are indeed built into a programming language and are designed to be called whenever required. These functions provide programmers with a consistent and efficient way to perform common tasks without having to write the code from scratch every time. For example, in languages such as Python, functions like print () for output and Len () for finding the length of a list are part of the standard library and can be used at any point in a program.