HTTPS (Hypertext Transfer Protocol Secure) enhances HTTP (Hypertext Transfer Protocol) by providing secure internet communication through encryption protocols like SSL/TLS for data transmission between clients and servers.
- HTTP (A) transmits data but lacks encryption, making it less secure than HTTPS.
- FTP (B), the File Transfer Protocol, is for file transfers and requires SSL/TLS for security.
- SMTP (D), the Simple Mail Transfer Protocol, is for sending emails and does not inherently provide secure internet communication.
Therefore, the correct answer is (C), HTTPS.