A positive sign of pregnancy –

Correct option is C

Sol. Fetal heart sounds are a positive (conclusive) sign of pregnancy, as they directly confirm the presence of a viable fetus. These sounds can be heard using a Doppler device as early as 10–12 weeks or with a fetoscope by 18–20 weeks. Unlike presumptive or probable signs, fetal heart sounds are not influenced by other conditions, making them an objective indicator of pregnancy.
Explanation of each option:
· (a) Hegar’s sign – Refers to softening of the lower uterine segment, a probable sign of pregnancy but not conclusive.
· (b) Osiander’s sign – Increased pulsation in the lateral fornices, considered a probable sign due to increased blood flow.
· (c) Fetal heart sound’s – Correct. A positive sign, as it is an irrefutable confirmation of a living fetus.
· (d) Morning sickness – A presumptive sign based on symptoms experienced by the woman, but it can occur in other conditions too.