Which is the long-form option to enable port scanning in Sublist3r?

• A. --engines
• B. --help
• C. --output
• D. --ports

Answer: (D)

Port scanning is a feature that checks which services are accessible on discovered subdomains. In Sublist3r, enabling this capability is done with a long-form flag that clearly mentions ports. That is --ports. It directly signals that the tool will perform port probing after gathering subdomains. The other options serve different purposes: --engines toggles which search engines to query for subdomains, --help shows usage information, and --output designates a file to write results. To use it, you’d run something like: python sublist3r.py -d example.com --ports, and Sublist3r would enumerate subdomains and then scan common ports on them.