Correct option is D
Correct Answer
(d) B and D
Explanation
During pregnancy, FSH and LH secretion is suppressed due to high estrogen and progesterone levels, so statement A is incorrect.
Aldosterone secretion increases to promote sodium and water retention, so statement B is correct.
Glucocorticoid levels rise rather than fall, making statement C incorrect.
Thyroxine secretion increases because of higher metabolic demands and increased thyroxine-binding globulin, so statement D is correct.
Information Booster
• Placental hormones regulate most endocrine changes during pregnancy.
• Progesterone and estrogen inhibit ovulation by suppressing FSH and LH.
• Expanded blood volume is supported by aldosterone action on kidneys.
• Basal metabolic rate increases, raising thyroid hormone production.
Additional Knowledge
Option (a) is incorrect because FSH and LH do not increase in pregnancy.
Option (b) is incorrect because glucocorticoids increase, not decrease.
Option (c) is incorrect because both statements are wrong.
