A unit data in text file is …..Select one:a.A string.b.An ASCII code of a character.c.A word.d.A number.

Understanding the Question

The question asks to identify what constitutes a "unit data in a text file" from the provided options.

Analysis of Options

1. a. A string: A unit of data can be represented as a string, as text files primarily store textual information.
2. b. An ASCII code of a character: While ASCII codes represent characters in a binary format, they are not what we commonly refer to as "unit data" in a text file.
3. c. A word: A word can be a unit of data, as text files can contain words as collections of characters.
4. d. A number: Numbers can also be unit data in a text file, but they are not always considered the primary format.

Conclusion

The best answer is a. A string, as it broadly encompasses the concept of what constitutes a unit of data in a text file, reflecting the nature of how text files organize and store information.

Final Answer

a. A string