Alice is working on a website that calculates the total cost of products selected by a user. She notices that she is repeatedly writing the same code to calculate the sum of prices. To make her code more efficient, she decides to group this repeated code in one place so that she can call it whenever she needs to perform the calculation. What is the programming concept Alice is utilizing to improve her code?
Alice is using the concept of functions. Functions allow a programmer to create a reusable set of instructions. Instead of writing the same code over and over, a function can be defined once and called multiple times whenever the operation is needed. This enhances code readability and maintainability. The other options provided do not directly refer to grouping code for reusability; 'variables' store data values, 'arrays' hold multiple values in a single variable, and 'objects' encapsulate data and behavior but are not specifically for grouping and reusing a set of instructions.
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