What data type is used to represent a sequence of characters?

The correct choice is String because it is specifically designed to represent a sequence of characters. In programming, a string is a data type that allows you to store and manipulate textual data. This can include letters, numbers, symbols, and spaces, all considered as a series of characters that can be processed as one entity.

For instance, in many programming languages, strings can be enclosed in quotation marks to denote their beginning and end. They support various operations, such as concatenation (joining strings together), slicing (extracting parts of a string), and searching for substrings.

The other choices are not suitable for this purpose. The Char data type represents a single character, not a sequence. Integer is used for whole numbers, while Float is used for decimal numbers. Neither of these can encapsulate multiple characters as a string can, making String the right choice for representing sequences of characters.