Astudent adds 3.5 moles of solute to enough water to make a 1500ml solution. what is the concentration?

The answer is:

Since there is not information about the solute but only its mass, we need to assume that we are calculating the molar concentration of a solution or molarity. So, need to use the following formula:

Now, we know that the mass of the solute is equal  3.5 moles and the volume is equal to 1500 mL or 1.5L

Then, substituting into the equation, we have:

Have a nice day!

i think it's c. i'm not sure but i think so.