Q: Fact 1: Specialization occurs when competing species evolve different adaptations. Fact 2: For each species, mammal or bird, there are very specialized diets. Given the two facts above, what is an adaptation?

OPT: [i] diet. [ii] gametes. [iii] the Sun. [iv] sleep. [v] rest. [vi] toads. [vii] gills. [viii] alleles.
The answer is:
[i]