Which of the following complication is/are not related with STDs ?
a. Pelvic inflammatory diseases
b. Still births
c. Ectopic pregnancies
d. Erythroblastosis foetalis

1. d only
2. a and b
3. c and d
4. a, b and c

The correct option is A d only
Among the given options, there is only one complication which is not related to STDs is Erythroblastosis foetalis.
Erythroblastosis foetalis or haemolytic disease of the new-born:-
It is a condition in which develops in the foetus if the woman is pregnant with a second Rh-positive foetus, the anti-Rh antibodies, called haemolysins, will cross the placenta and will destroy all the foetal RBCs (red blood cells).
Rest others are related with sexually transmitted diseases (STD).