Which character set uses a transformation code to store characters?

The correct answer is UTF-8, which is a widely used character encoding that employs a variable-length transformation format to represent characters. Unlike fixed-length encoding schemes, UTF-8 can use one to four bytes to encode characters, which allows it to accommodate a vast range of characters from various languages and symbol sets while remaining backward compatible with ASCII.

This flexibility is achieved through its encoding strategy, where the first 128 characters (the ASCII set) are represented using a single byte, and characters beyond this range are encoded using multiple bytes (up to four). This allows UTF-8 to efficiently handle a diverse set of characters while optimizing space for texts primarily in English or other languages that use the ASCII character set.

By utilizing this transformation mechanism, UTF-8 supports not only standard characters but also characters from languages that require more than 256 symbols, such as Chinese, Japanese, and many others, making it a versatile and preferred encoding format in modern computing environments and web standards.