By the end of second month of pregnancy ( 8 weeks), the foetus develops limbs and digits By the end of 12 weeks (first trimester) of pregnancy, most of the major organ system are formed. The limbs and external genital organs are also well developed. During the fifth month ( 20 weeks) of pregnancy, the first movements of the foetus and appearance of hair on the head are usually observed. By the end of about 24 weeks (ends of second trimester) of pregnancy, the body is covered with fine hair, eye lids separate and eyelashes are formed. So, the correct match is A-II, B-III, C-IV, D-I
