When a message is sent using computers, it is commonly referred to as an 'Email.'
Here's a more detailed explanation:
Definition of Email : Email, short for 'electronic mail,' is the method of exchanging digital messages over the internet using electronic devices such as computers.
How it works :
When you send an email, your message is sent from your computer or device through an internet connection to an email server.
The email server then forwards the message to the recipient's email server.
Finally, the recipient's email server delivers the message to their email inbox, where they can read it at their convenience.
Common Uses :
Emails are used for professional communication, personal communication, newsletters, marketing campaigns, and more.
Why choose Email? :
It is fast, cost-effective, and you can attach files, images, and other media to your messages.
In contrast, the other options provided are not typically correct:
Mail (b) : Traditionally refers to physical letters sent through postal services.
Drive (c) : Often refers to cloud storage services where files can be stored and shared, not typically the act of sending a message.
App (d) : Short for application, it refers to software applications used on smartphones and computers, but doesn't specifically denote messaging.
Therefore, the most appropriate answer is option a) Email .