Answer:
The correct answer is d. 20,000,000 to 150,000,000
Explanation:
The normal number of spermatozoa per milliliter of semen in male adult is between 20 million to 300 million. If the sperm count is below 10 million per ml then the sperm count is considered to be low.
If the sperm count ranges between 20 million to 40 million per ml then it is considered as average sperm count. In this case doctors usually check the motility, size and shape of spermatozoa and if the motility is high then it is considered to be normal sperm count.
