The collaborating style of conflict resolution is most effective in situations where there is a high level of trust among the parties. This style involves both assertiveness and cooperation, aiming to explore disagreements comprehensively to find solutions that genuinely satisfy the concerns of all parties involved. It requires a trustful environment where parties are open and willing to share their perspectives and work together constructively.References: Institute of Internal Auditors (IIA) - Professional Practices Framework on Conflict Resolution

A whistleblower hotline serves as a preventive control by deterring potential perpetrators of fraud. Knowing that their actions can be reported easily and anonymously through the hotline creates a psychological barrier against committing fraud (Option C). This preventive aspect is supported by the IIA's guidance on fraud risk management, which highlights the role of whistleblower mechanisms in creating an environment where unethical behavior is less likely to occur due to the increased risk of detection and reporting.
IIA Practice Guide: Internal Auditing and Fraud
ACFE's Fraud Prevention Resources

Loss of intellectual property is a significant strategic risk that internal auditors should consider when performing a third-party risk management engagement. This risk can have substantial implications for the organization's competitive advantage, reputation, and financial performance. Ensuring that third parties have adequate controls to protect intellectual property is essential for mitigating this risk. Internal auditors should evaluate the effectiveness of these controls and the potential impact of intellectual property loss on the organization's strategic objectives.
The IIA Standards: Standard 2120 - Risk Management: "The internal audit activity must evaluate the effectiveness and contribute to the improvement of risk management processes." IIA Practice Guide: "Auditing Third-party Risk Management": Highlights the importance of assessing strategic risks, including intellectual property protection, in third-party relationships.