Double hearing protection consists of two devices. Which are they?

• A. One (Earplugs)
• B. Three devices
• C. None
• D. Two (Earplugs and Muffs)

Answer: (D)

Double hearing protection means using two devices to lower the noise reaching the ears, giving greater attenuation than a single device. The common and effective pairing is earplugs plus earmuffs. Earplugs seal the ear canal to cut down noise entering directly through the canal, while earmuffs cover the outer ear to dampen remaining sound and protect against leaks around a poor seal. Together, they provide more overall protection, which is especially important in very loud environments. If using both, insert the plugs properly and wear the earmuffs snugly so gaps aren’t created, ensuring the protection isn’t compromised. The other options don’t fit because they involve only one device, more than two devices, or none at all.