Explain the concept of a circular buffer and its application in arrays.

A circular buffer is a fixed-size data structure where elements wrap around once the buffer is full.
A circular buffer is a resizable data structure where elements are added in a circular manner
A circular buffer is a stack-based structure with pointers for push and pop operations
A circular buffer is an array with a fixed size and a read/write pointer that wraps around the buffer when reaching the end

Circular buffers are used in scenarios like streaming data processing, where old data can be overwritten with new data cyclically. They optimize memory usage and are efficient for continuous data handling.

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