Question

question 14
we are best at hearing
infra - sonic sound
ultrasonice sound
neither of these.
both of these.

Explanation:

Infrasonic sound has a frequency below 20 Hz, and ultrasonic sound has a frequency above 20,000 Hz. The human ear is most sensitive to sounds in the range of approximately 20 - 20,000 Hz. Infrasonic and ultrasonic sounds are outside the range where the human ear is most efficient at detecting and processing sound for normal hearing purposes.

Answer:

neither of these.