Students send and receive many messages by E-mail through computer. In this case, E-mail is an example of -

Correct option is B

Answer: (b) Software.
Explanation:
E-mail is an application software that runs on computer hardware to facilitate sending and receiving messages. Courseware refers to educational software, hardware refers to physical components, and malware refers to malicious software. Since E-mail is a program, it falls under software.