Answer:
a.
Explanation:
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
You could put rhe 100 and 50 on one side and on the other side put 250.
I guess it's DNA replication
D, Organism B.
8/2 is 4, the greatest average of both variables.