What is the primary purpose of syntax rules in programming?

The primary purpose of syntax rules in programming is to validate program statements. Syntax rules are the formal set of guidelines that dictate the structure and format of statements in a programming language. These rules ensure that the code is written in a way that the compiler or interpreter can understand and process it effectively. If the syntax is incorrect, the program will not run, and the interpreter will generate errors, indicating that there is a problem with the way the statements are written.

While program performance and execution are important aspects of programming, they are not the main function of syntax. Similarly, structuring data is related to how data is organized within the program but does not directly pertain to the rules that govern the formation of statements. Hence, the validation of program statements by enforcing syntax rules is the fundamental role they play, ensuring clarity and functionality in coding.