Final answer:
Selection and repetition control structures are used in programming to manage the flow of control based on conditions, with selection structures choosing paths of execution, and repetition structures allowing code to run multiple times.
Step-by-step explanation:
Selection control structures and repetition control structures both play crucial roles in programming. Their commonality lies in how they enable the flow of control in a program based on certain conditions. A selection control structure, such as an if statement, allows the program to choose a different path of execution based on whether a specified condition is true or false. Conversely, a repetition control structure, like a for or while loop, allows the program to execute a block of code multiple times until a specific condition is satisfied or no longer holds.
Despite their different uses, both types of structures rely on conditional logic to determine the flow of execution. They are essential tools for developers in creating dynamic and responsive programs. Without these structures, programs would run from start to finish without any ability to make decisions or repeat tasks efficiently.