Viability of fetus is beyond ?

Ans. is 'b' i.e.,28 weeksViability means the physical ability of a fetus to lead a separate existence after bih apa from its mother, by viue of a ceain degree of development. A child is ble after 210 days (7 months) of intrauterine life, and in some cases after 180 days (6 months) but in most of these cases fetus is immature.