Answer:
A. Ancient bacteria
Explanation:
From the salt of the earth, researchers have isolated and revived a Bacillus strain, which they believe is >250 million years old. If correct, Russell Vreeland and his colleagues from West Chester University, Pennsylvania, have discovered the oldest living organism in the world.
The keyword here is "area per volume" which is available in both cases. Besides capillaries are smaller than arteries they have in total more area as there are many vessels of then. The More the area/volum, the less the velocity
Muscle tissue is responsible for about 22% of the calories burned at rest, fat accounts for only 4%.
The expected phenotype it 75% tall. Since they are both heterozygous, there is a 25% chance that the phenotype would be short.
Hope this helps! :3
