The correct answer is A. ASCII.
ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns 7-bit binary codes to 128 characters. ASCII is the most widely used character encoding standard in the world. It is used in many different applications, including computers, telecommunications, and networking.
EBCDIC stands for Extended Binary Coded Decimal Interchange Code. It is a character encoding standard that assigns 8-bit binary codes to 256 characters. EBCDIC is used primarily by IBM mainframe computers.
BCD stands for Binary Coded Decimal. It is a number system that uses four binary digits (bits) to represent each decimal digit. BCD is used in many different applications, including computers, telecommunications, and networking.
D is not the correct answer because ASCII is not the only standard data code to represent alphabetical, numerical and punctuation characters used in Electronic Data Processing system. EBCDIC and BCD are also used for this purpose.
E is not the correct answer because ASCII is the most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in Electronic Data Processing system. EBCDIC and BCD are not as commonly used.