What substance is not soluble in water, is derived from animal-based foods and synthesized by the body, and while circulating in the blood, can accumulate on the inner walls of arteries and restrict blood flow?

a) cholesterol
b) high-density lipoproteins
c) triglycerides
d) saturated fat

D) saturated fat

Explanation:

Saturated fat -

It is a form of fat , where saturation is present , i.e. , presence of single bonds , it is a type of very unhealthy fat .

Butter , red meat , coconut oils and palm are rich in saturated fat , and are mostly in solid state at room temperature .

These fats often tends to be collected in the walls of arteries , and ,  can act as a restriction to the flow of blood .

Hence , the correct option for the given information of the question is saturated fat .

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.