Which of the following issues falls under the jurisdiction of private investigation?

The scope of private investigation encompasses several distinct areas, one of which includes fraud, infidelity, missing persons, and theft investigations. These issues directly align with the fundamental role of private investigators, who are often called upon to uncover facts, gather evidence, and provide clear findings related to these specific concerns.

Fraud investigations typically involve identifying deceptive practices, which can range from financial fraud to scams affecting individuals or businesses. Infidelity cases revolve around confirming or disproving suspicions regarding a partner's fidelity, requiring discreet surveillance and evidence collection.

Missing persons cases demand thorough searching techniques, interviewing skills, and public outreach strategies, all of which are pivotal aspects of private investigation work. Theft investigations leverage the private investigator’s expertise in forensic methods, interviewing witnesses, and examining the circumstances surrounding the theft to recover stolen items or identify perpetrators.

In contrast, other options either fall outside the typical realm of private investigation or pertain to different professional practices. Corporate audits are typically conducted by certified accountants or auditors, while legal representation in court is the domain of licensed attorneys. International espionage usually involves government entities and national security concerns rather than private investigators operating within civilian capacities. Thus, B is the most fitting choice as it accurately reflects the activities a private investigator is trained to handle.