How are components arranged in a one-dimensional array?

A one-dimensional array is essentially a linear data structure that organizes its elements in a sequential manner. This means that the components of a one-dimensional array are laid out in a single line, following one after the other, which is akin to how items are arranged in a list. Each element in the array is accessed using an index that reflects its position in this linear arrangement, starting from zero for the first element.

The other arrangements mentioned—tree structure and grid format—are characteristic of more complex data structures. A tree structure involves a hierarchical organization whereby each element can link to multiple elements beneath it, and a grid format suggests a two-dimensional array where elements are organized in rows and columns. The notion of random arrangement does not hold true for arrays, as their elements are systematically stored in contiguous memory locations. Hence, the most accurate description of the layout of a one-dimensional array is that it organizes its components in list form.