Intensely lactating mothers do not commonly conceive due to:
The suppression of gonadotropins
The correct option is B.
Explanation of the correct option: -
Explanations of the incorrect options: -
Option A: - When conditions are bad, delaying or limiting reproductive activity appears to be an adaptive reaction to maximise reproductive success across the lifespan. In many social mammals, dominant females use aggressiveness and infanticide to prevent subordinate females from reproducing.
Option C: - Fertilization happens in the oviduct's ampullar area. Spermatozoa are carried upward from the vaginal canal to the ampulla (eg., in primates and ruminants).
Option D: - Absent menstrual periods, infertility, vaginal dryness, and the loss of some feminine features are all symptoms of hyposecretion of gonadotropins in premenopausal women.
Final Answer: - Intensely lactating mothers do not commonly conceive due to the suppression of gonadotropins.