Respuesta :
The best and most correct answer among the choices provided by your question is the fourth choice or letter D "The thin membrane that closes the cavity of the middle ear from the outside changes position."
Your ears pop in airplanes because the air high above the surface of Earth is less dense than air near the surface, because air near the surface has all the air above it pushing down. Your inner ear has air trapped in it and as the atmospheric pressure changes, it causes pressure on your eardrum.
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Your ears pop in airplanes because the air high above the surface of Earth is less dense than air near the surface, because air near the surface has all the air above it pushing down. Your inner ear has air trapped in it and as the atmospheric pressure changes, it causes pressure on your eardrum.
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
Correct answer: D). The thin membrane that closes the cavity of the middle ear from the outside changes position.
The popping sound is often experienced by the ears during the taking off on a plane flight, it is because the air at the higher surface is less dense than the air near the surface. The air in inner air is trapped in and as there is a change in atmospheric pressure, it causes pressure on the eardrum which changes its position and we experienced popping of the sound.
Hence, the correct answer would be option D.