The correct answer is 31 days. Gestation period is the time between fertilization and birth of offspring. In rabbits, the gestation period ranges from 28 to 35 days, but the average is around 31 days. During this period, the female rabbit or doe will be pregnant and will give birth to a litter of kits. The gestation period may vary slightly depending on factors such as the breed of the rabbit, the age of the doe, and the environmental conditions.