What is the function of 'if-else' statements in scripting?

'If-else' statements serve a critical function in scripting by allowing the execution of different blocks of code based on whether a specified condition evaluates to true or false. This conditional logic is essential for controlling the flow of a program, enabling scripts to make decisions and react accordingly to various inputs or conditions.

When a script encounters an 'if' statement, it evaluates the condition specified. If that condition holds true, the code block associated with the 'if' statement is executed. Conversely, if the condition evaluates to false, control can pass to an 'else' block (if present), which contains an alternative set of instructions. This structure is vital in writing dynamic scripts that can adapt their behavior based on user input, data states, or environmental factors.

Other options provided do not serve this same purpose. For example, executing code repeatedly corresponds to loops rather than conditional statements. Handling errors in scripts is achieved through error management techniques, such as try-catch blocks, rather than 'if-else' statements. Similarly, creating graphical representations of data is typically accomplished with dedicated libraries or frameworks rather than basic scripting constructs like 'if-else' statements. Thus, the 'if-else' construct is a foundational tool for decision-making within scripts.