Which of the following tools is used by pen testers and analysts specifically to analyze links between data using link analysis and graphs?

Metasploit is an exploitation framework used to develop, test, and execute exploits against target systems, and does not provide link analysis or graph-based data visualization.

Wireshark is a network protocol analyzer used to capture and inspect packet-level network traffic, not a tool for relationship mapping or link graph analysis.

Maltego is purpose-built for link analysis and graph-based visualization, allowing analysts and pen testers to map relationships between entities such as people, domains, IP addresses, and organizations by querying data sources called transforms. Its graph interface makes it uniquely suited for identifying connections and patterns between disparate data points, which is the specific capability described in the question.

Cain and Abel is a password recovery and credential attack tool for Windows, focused on sniffing, cracking, and ARP poisoning rather than link analysis or data relationship graphs.