Classify each of the following as a suspension, solution, or colloid.

So, I did some research and found that the other part of the question was, "A. Gasoline B. Blood C. Mud" 

A suspension is a mixture containing solid particles that are large for sedimentation. We know that mud contains solid pieces of dirt that haven't been broken down. So, suspension = mud.

A solution is a mixture composed of two or more substances. We know that gasoline is made of petrol mixed with a variety of additives. So, solution = gasoline.

A colloid is a solution that has particles ranging between 1 and 1000 nanometers, yet are still able to remain evenly distributed throughout the solution. We know that blood is thin and isn't mixed with anything but our blood. So, colloid = blood.

Blood: colloid

Mud: Suspension

Gasoline: solution

The answer is D

Nitrogen and fluoride are both nonmetals which is why they have prefixes in front of them stating how many of each there are.

Tri stands for 3, meaning that there is 3 fluorides and only one nitrogen since it does not have a prefix