Question

what medium do sound waves most commonly travel through to reach our ears? water air concrete steel

Explanation:

Sound waves need a medium to travel. In our daily life, the most common medium for sound waves to reach our ears is air. We are surrounded by air, and when objects vibrate (producing sound), the vibrations are transferred through the air molecules to our ears. Water is a medium for sound (like underwater sounds), but not the most common for our daily hearing. Concrete and steel are solids, and while sound can travel through them (faster than in air in some cases), they are not the medium that sound waves most commonly use to reach our ears in typical situations.

Answer:

B. air