On an average, a bull ejaculates -

Correct option is D

· Correct answer: (d) 4 ml semen
· On average, a bull ejaculates about 4 ml of semen per ejaculation, although it can vary depending on the breed and health of the bull.
Other options:
· (a) 8 ml semen: Too high compared to the average volume of 4 ml.
· (b) 2 ml semen: This is less than the average amount.
· (c) 3 ml semen: Also a bit lower than the typical volume.