The earliest symptom of pregnancy is?

Correct option is B

Sol. Amenorrhea (missed period) is usually the earliest and most definitive sign of pregnancy, especially in women with regular cycles. It occurs due to rising levels of hCG and progesterone which maintain the endometrial lining, preventing menstruation. It prompts women to take a pregnancy test.
Explanation of each option:
· (a) Morning sickness – Common in early pregnancy but usually starts in the 5th–6th week, not the very first sign.
· (b) Amenorrhea – Correct. It's typically the first noticeable change and leads women to suspect pregnancy.
· (c) Quickening – Refers to fetal movements, felt around 16–20 weeks, so it’s a later symptom.
· (d) Constipation – May occur later due to progesterone slowing bowel movement, but it’s nonspecific and not early.