Which of the following is a characteristic of optical drives?

The characteristic of optical drives is that they read small bumps with a laser beam. Optical drives, such as CD, DVD, and Blu-ray players, utilize laser technology to read and write data stored on optical discs. The data on these discs is encoded in the form of tiny bumps and flat areas, known as pits and lands, which the laser can detect as it scans the surface of the disc. This process enables the drive to retrieve the stored information accurately.

The other options do not accurately describe the features of optical drives. Spinning platters are associated with traditional hard disk drives rather than optical drives. Flash memory is used in solid-state drives (SSDs) and USB flash drives, not in optical disk technology. Additionally, the M.2 interface is relevant for connecting certain types of solid-state drives to a motherboard, which is not applicable to optical drives.