What are the exposure routes?

What are the exposure routes?

• A. Dermal, inhalation, oral, eyes
• B. Dermal; inhalation; ingestion
• C. Inhalation only
• D. Dermal and oral only

Answer: (A)

Exposure routes are the ways a chemical can enter the body: through the skin (dermal), by breathing it in (inhalation), by swallowing (oral/ingestion), and through the eyes (ocular exposure). The best choice lists all four routes—dermal, inhalation, oral, and eyes—because each pathway represents a potential exposure route in real-world settings, and omitting any one route can miss a significant exposure risk. The other options leave out at least one route (for example, focusing only on inhalation ignores skin, ingestion, or eye exposure; or listing only dermal and oral misses inhalation and eyes; or using ingestion instead of eyes omits ocular exposure).

Exposure routes are the ways a chemical can enter the body: through the skin (dermal), by breathing it in (inhalation), by swallowing (oral/ingestion), and through the eyes (ocular exposure). The best choice lists all four routes—dermal, inhalation, oral, and eyes—because each pathway represents a potential exposure route in real-world settings, and omitting any one route can miss a significant exposure risk. The other options leave out at least one route (for example, focusing only on inhalation ignores skin, ingestion, or eye exposure; or listing only dermal and oral misses inhalation and eyes; or using ingestion instead of eyes omits ocular exposure).