Final answer:
E-mail is asynchronous, allowing messages to be sent and received at different times, while instant messaging is synchronous and real-time.
Step-by-step explanation:
The correct statement about the differences between e-mail and instant messaging is option c) E-mail is asynchronous, allowing messages to be sent and received at different times, while instant messaging is synchronous and real-time.
E-mail is a method of sending messages electronically, where messages can be composed and sent at one time and received at a different time. Instant messaging, on the other hand, allows for real-time communication where messages are sent and received instantly. This allows for quick back-and-forth conversations.
For example, if you want to send a formal message to your teacher or a longer message that doesn't require immediate response, e-mail would be more appropriate. However, if you want to have a quick chat with a friend or colleague, instant messaging would be the better choice.