What is a homozygous condition resulting in the formation of abnormal hemoglobin that distorts certain blood cells known as?

Sickle cell anemia

The formation of abnormal hemoglobin that distorts certain blood cells is a condition called sickle cell anemia. It has a crescent shape resembling to a sickle that makes it sticky, rigid, and prone to being trapped in small vessels that blocks the blood from reaching to different parts of the body. 

In addition, this is a genetic disease of the red blood cells with an autosomal recessive condition and you need to have two copies of the gene to have the disease.

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)