I think it’s A (low water content foods)
Your nose and your mouth are both a portal of entry into your body. If you cover one and not the other it defeats the purpose because Bacteria can still enter the system. They are both part of your respiratory system.
The slowing down of the ray of light also causes the light to change direction
It is a mode of natural selection where an extreme phenotype is favored by the other phenotypes causing the allele frequency to shift over time in the direction of that phenotype
The other cat has (I dont know what letters your using so I'm going to use 'c'.
The first genotype looks like this cc
the other Parent has to have a donomint trate as well as the recessiv Cc
