Which of the following accurately describes the principal role of a penetration tester?

Question $15$ options:

A penetration tester monitors network traffic in order to detect anomalies.

A penetration tester attacks and$/$or exploits systems to identify vulnerabilities in order to make them resilient to realistic threats.

A penetration tester analyzes previous attacks to determine tactics, techniques, etc. used by the hacker.

A penetration testers develops high$-$level security for organizations.