The type of blood vessel that allows easy passage of oxygen, carbon dioxide, nutrients, and waste through its cell wall is the

The type of blood vessel which has the function of having to allow passage easily of other substances such as nutrients, carbon dioxide, oxygen and even waste in the cell wall is known to be the capillary.  It is known to be a branching blood vessel in which it has a role of being a network with both the venules and arterioles.

sorry, but you do not have posted the diagram.

b. read the phase at the intersection of any given temperature and pressure.