Final answer:
Each element of an array is accessed by a subscript, which is the number representing the position of that element within the array. Subscripts are also known as indices and typically start at zero in most programming languages, thus allowing programmed access to array elements.
Step-by-step explanation:
Each element of an array is accessed by a number known as a subscript.
In computer programming, an array is a collection of elements that are stored in contiguous memory locations. To retrieve or modify the value of an element within an array, you need to use its subscript, which is often referred to as the index. The subscript indicates the element's position within the array, often starting with zero for the first element.
For example, in a C-style language, an array element can be accessed as follows: arrayName[2] would access the third element of the array because indexing starts at zero in these languages. In a language like Python, arrayName[2] has a similar effect.