Answer:
Most humans cannot see ultraviolet light because it has a smaller wavelength than violet light, putting it outside of the visible spectrum.

The real answer is B. Facilitated transport.
The offspring did not have white fur due to the fact that white fur is a recessive trait. One parent had brown fur, which is a dominant trait, that cancels out the recessive trait and that is why the offspring did not have white fur.
You can tell by similar genetic features, eye colour, hair type and colour