Final answer:
The statement is false; there is no strict limit on the number of control structures that can be used within the main function of a program. Programmers have the freedom to include multiple control structures to handle their program's logic and flow.
Step-by-step explanation:
The statement that only a limited amount of control structures are permissible in the main function is false. In programming, particularly within the context of functions such as the main function, a developer is allowed to use a variety of control structures, such as if statements, loops (for, while, do-while), and switch cases, as needed to achieve the desired program flow and logic. The main function, serving as the entry point for many programming languages, can have as many control structures as necessary, subject to the practical limitations of program complexity and maintainability.