How many binary digits can a single bit store?

A single bit is the most basic unit of data in computing and digital communications, and it can store exactly one binary digit. Binary digits can be either 0 or 1, which correspond to the two possible states of a bit. This foundational concept in computer science is crucial for understanding how data is represented and manipulated within computer systems.

The other choices do not accurately reflect the capabilities of a single bit. Zero does not represent a stored value, two would imply a larger unit that can encompass both 0 and 1 but is not a single bit, and eight corresponds to a byte, which is made up of eight bits rather than a single bit itself. Therefore, a bit can only store one binary digit.