Voice of which of the following is likely to have a minimum frequency?
(a) baby girl
(b) baby boy
(c) a man
(d) a woman
Answer: (c) a man
Voice of a man is most likely to have the least frequency, while that of a baby girl will have the highest frequency.
The voice of a man is of lower pitch as compared to the voice of a baby girl, baby boy or a woman. Since frequency of sound is directly proportional to its pitch, man's voice is of minimum frequency as compared to others.