Final answer:
The sequence of statement execution in a program can indeed be altered by using functions and function calls; this is true and essential for structured and reusable code.
Step-by-step explanation:
The statement "The sequence in which the statements are executed in a program can be altered through the use of functions and function calls." is true. In programming, functions are blocks of code designed to perform a specific task. When a function is called, the program execution jumps to that function, executes its code, and then returns to the point where it was called. This alters the normal top-down sequence of executing statements. Functions encourage better program structure and code reusability.