Which of the following complication is least likely to be associated with hypothyroidism in pregnancy?

The major associations of hypothyroidism in pregnancy are high fetal wastage, aboion, still bih and prematurity, deficient intellectual function. A high association of pre-eclampsia and anemia are also seen with hypothyroidism. So by exclusion we can put the answer as polyhydramnios. Ref: Textbook of Obstetrics By D. C Dutta, 6th Edition, Page 290.