Which of the following is not considered a sensitive receptor?

• A. A residence
• B. An electrical outlet at the facility
• C. A school
• D. A daycare center

Answer: (B)

Sensitive receptors are places or groups where people or ecosystems can be affected by environmental factors like pollutants or noise. Occupied spaces such as homes, schools, and daycare centers are sensitive because people there—especially children and residents—are more vulnerable to adverse effects. An electrical outlet at the facility isn’t a site where people live or regularly gather, so it doesn’t represent a receptor of environmental exposure. That’s why it isn’t considered a sensitive receptor, whereas residences, schools, and daycare centers are.