Zygote, and it is diploid (2n) because it has 46 chromosomes
The mRNA is being made into a protein.
This is translation and it happens outside the nucleus, in ribosomes in the cytoplasm or the rough endoplasmic reticulum. So the answer is c.
Let me know if you have any questions
It must be widespread, limited in geological time, and distinctive.
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It could be said that the astronomer who placed the sun in the center of the solar system was Copernicus.
He developed the model of the universe that placed the Sun in the center rather than the Earth. It was considered the Copernican Revolution because of its contribution to science and the change of paradigm.