Which tool would be used to collect wireless packet data?

NetStumbler (Network Stumbler) is purpose-built for wireless network discovery and data collection, capturing information from 802.11 wireless frames such as SSID, BSSID, channel, signal-to-noise ratio, and security settings. It is the only tool in the list designed specifically to interact with and collect data from wireless networks.

John the Ripper is a password auditing and offline hash-cracking tool, completely unrelated to wireless packet collection.

Nessus is a vulnerability scanner used to identify security weaknesses and misconfigurations in networked systems, not a wireless packet data collection tool.

Netcat is a general-purpose TCP/UDP command-line utility for creating connections, port scanning, and data transfer - it does not capture or analyze wireless packets.