Final answer:
An array is a data structure that has an unbound number of homogeneous elements.
Step-by-step explanation:
The data structure that has an unbound number of homogeneous elements is an array. An array is a collection of elements of the same data type, stored in contiguous memory locations. It allows for efficient access to elements based on their indices.
For example, in a homogeneous array of integers, all the elements would be of the integer data type. And in a homogeneous array of strings, all the elements would be of the string data type.