🔍 Key Concepts

• Mercaptans are added to otherwise odorless gas (like natural gas or LPG) so that leaks can be detected by smell. • In industry practice, the process has a specific technical name related to giving something a strong, warning odor. • Think about which option sounds most like a formal term used in gas safety procedures, not casual speech.

💭 Think About

• Which choice sounds least like everyday slang and more like a specialized safety or engineering term? • If the goal is to make gas strongly noticeable by smell, which word best suggests adding a sharp, warning odor? • Eliminate any answers that sound like what a layperson might casually say rather than what would appear in a textbook or regulation.

✅ Before You Answer

• Focus on the purpose: making an odorless gas easily detectable by smell for safety. • Ask yourself which term you’d expect to see in a technical manual or safety procedure, not in casual conversation. • Double‑check that the word you pick clearly implies adding a strong odor, not just noticing or lightly flavoring it.