Question

most of the objects in our daily life travel at ______ speeds. ultrasonic infrasonic supersonic subsonic

Explanation:

Ultrasonic and infrasonic refer to sound frequencies, not speeds. Supersonic means faster than the speed of sound (not common in daily - life objects). Subsonic means slower than the speed of sound, which is typical for most daily - life objects like cars, bicycles, etc.

Answer:

subsonic