Correct Answer:
A. Electronic mail
Email is a fundamental method of digital communication, enabling the exchange of messages over computer networks. The term Electronic mail is the correct answer because "email" is a direct contraction of these two words. This accurately describes its function as a system for sending and receiving messages electronically, distinguishing it from traditional physical mail. It revolutionized communication by providing instant message delivery across the globe.
- Easy mail is incorrect; while email aims to be user-friendly, this is not the full form or official meaning of the acronym.
- Exchange mail is incorrect; Microsoft Exchange is a specific server software used for email, but it's not the general meaning of the term "email."
- External mail is also incorrect; this term does not accurately describe the nature or origin of email as a digital communication method.