Final answer:
Parallel arrays are two or more arrays that hold related data, and the elements are accessed using a common subscript.
Step-by-step explanation:
Parallel arrays are two or more arrays that hold related data, and the elements are accessed using a common subscript. In parallel arrays, each element of one array corresponds to the same-index element in another array. For example, if we have two arrays: names and ages, where names[0] corresponds to ages[0] and so on. This allows us to store and retrieve related data together.