Which infrequently used test is usually performed between the 8 th and 11 th week of pregnancy but produces a risk of miscarriage of 1 in 100 to 1 in 200 pregnancies?

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

plato users

given bodies of water

pacific / arctic / indian / southern

[ a ] the caribbean sea

[ b ] the northern ocean

[ c ] the atlantic ocean

[ d ] the barents sea

with this being the given answers