Correct option is B
The correct answer is: (B) 280–285 days
Explanation:
The gestation period in cows typically ranges from 280 to 285 days (approximately 9 months and 10 days). This period can vary depending on the breed, age, health condition, and environmental factors.
Dairy cows (like Holstein and Jersey) usually have a gestation period closer to 280 days.
Beef cows (like Hereford and Angus) may have a slightly longer gestation, up to 285 days.