In UTF-8, UTF stands for Unicode Transformation Format. UTF-8 is a variable-width character encoding that represents each character as one to four bytes, depending on the character's Unicode code point.

• Unicode: Refers to the universal character encoding standard that includes characters from virtually all written languages in use today.
• Transformation Format: Refers to the method of encoding Unicode characters into sequences of bytes for storage or transmission.

So, UTF-8 is a specific encoding scheme that represents Unicode characters using one to four bytes, and "UTF" in this context stands for Unicode Transformation Format.

Why the other options are incorrect:

• (A) Unicode Transformation Formula: This is incorrect because the word "Formula" is not used in the official terminology.
• (B) Universal Transformation Formula: This is incorrect as it misrepresents the "Unicode" part of the standard.
• (D) Universal Transformation Format: While "Universal" might sound plausible, the correct term is "Unicode," not "Universal."

Thus, the correct term is (C) Unicode Transformation Format.