The right option is d.
comparative advantages
The comparative advantages
pattern of organization places several alternatives side by side and show why one
of them is more advantageous than the other. The items or alternatives to be
compared are in relation to one another and are functionally equal.
Answer:
The differential equations and the boundary conditions(initial and final)are shown in the attachment
Density = mass / volume
Plug in the values for mass and volume
Density = 1,800g / 300cm^3
Density = 6 g/cm^3
Its D, because i had this problem on a test, and of course i figured out the answer the hard way... lol