Practice question
Carbon monoxide poisoning is a special hazard for motorcyclists in cold weather because:
- Exhaust gases freeze on contact
- Riders may be tempted to warm up by sitting in a garage with the engine running, where odorless carbon monoxide can build up quickly
- Cold engines run cleaner
- Helmets contain carbon monoxide
Answer: B — Riders may be tempted to warm up by sitting in a garage with the engine running, where odorless carbon monoxide can build up quickly
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