What takes place in the nucleus of a cell? replication, transcription, or translation?

The answer is transcription.

Trascription is the process in which the information in the cell's DNA is used as a template to create RNA.

answer; /// i believe the correct answer is (thrombocytopenia); (a)

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.