Which safety guidelines are mentioned for wiring HART devices in hazardous environments?

• A. ATEX/IECEx or NFPA guidelines
• B. UL guidelines
• C. No guidelines
• D. Local building codes only

Answer: (C)

The material does not mention any safety guidelines for wiring HART devices in hazardous environments. Because nothing is cited, the best-supported conclusion is that no guidelines are stated in the source. This checks your ability to rely on the actual content provided rather than assuming standards you might expect to apply. In practice, engineers would consult applicable regional or product standards (such as ATEX/IECEx, NFPA, UL, or local codes), but the question here focuses on what the material itself specifies, which is none.