Which statement about engineers' professional conduct is correct?

Engineers possess special knowledge that is not common in the public domain, which is an important aspect of their professional conduct. This specialized knowledge places a significant responsibility on engineers to act ethically, as they often make decisions that can greatly impact public safety, health, and welfare. The complexity of engineering work often requires a deeper understanding of technical principles, design implications, and regulatory standards that the general public may not be aware of. As such, engineers are expected to use this knowledge judiciously and responsibly, ensuring that their actions align with ethical standards and professional practices. This understanding is vital for maintaining public trust and ensuring the integrity of the engineering profession.

The other options suggest misconceptions about the nature of professional conduct in engineering. The idea that only licensed engineers are expected to behave ethically overlooks the fact that ethical responsibilities apply to all practicing engineers, regardless of their licensure status. The assumption that ethical problems are always straightforward fails to acknowledge the complexities often involved in real-world decision-making, where ethical dilemmas can be nuanced and multifaceted. Lastly, the notion that engineers are not liable for ethical violations when unaware undermines the principle that professionals are expected to uphold ethical standards regardless of their awareness, emphasizing the necessity of being informed and proactive in ethical considerations.