Answer:
a.energy source ,either sunlight or chemicals
Explanation:
the animals using sunlight are known as photoautotrophs and the animals using chemicals are known as chemoautotrophs.
No, it the ratio does not prove that the shiny wing is dominant. The ratio only says that shiny wing is more common than the dull wings.
To know which allele is dominant, you need to do an experiment by crossing various beetle and observe the ratio of the offspring phenotype.