Which data type consumes the least amount of storage?

The Boolean data type consumes the least amount of storage compared to the other options listed. A Boolean represents a binary value that can only be one of two states: true or false. In terms of storage, a Boolean is typically represented using a single bit, which is the smallest unit of data storage.

In contrast, integers generally require at least 4 bytes (32 bits) to store a numerical value, while floating-point numbers (floats) usually take up even more space, often 4 bytes for single precision and 8 bytes for double precision. Strings, which are sequences of characters, can vary significantly in size depending on the number of characters they contain and typically require much more storage than a Boolean. Thus, the efficiency of the Boolean data type in terms of storage space makes it the correct answer.