<span>C. metric ruler since millimeters are metric</span>
B, I think, because by saying that the ice cube has a lower heat capacity means that it cannot stead heat enough to last longer then the water and pool.
Mitosis is probably the type of reproduction taking place because it deals with a sperm and an egg it is called (sexual reproduction)
Chromosome are found inside the Nucleus of a cell!
:) your answer is D.