Final answer:
Fur color in rabbits can be affected by diet, as certain alleles produce temperature-sensitive gene products that influence pigmentation. Additionally, natural selection favors fur colors that offer better camouflage, affecting the outcome of this trait.
Step-by-step explanation:
The outcome of the trait that is affected by the diet of the rabbit is Fur color. The Himalayan phenotype is a consequence of an allele responsible for a temperature-sensitive gene product that results in pigmentation only in the cooler parts of the rabbit's body. When considering the influence of environmental factors on phenotype, diet can indeed affect features such as fur color, especially in instances where certain alleles produce gene products that are sensitive to environmental cues like temperature. Furthermore, natural selection may favor rabbits with fur color that provides camouflage in their environment, such as white fur in snowy conditions, which increases their survival and chances of passing on their genes.