Precipitation is the correct answer
Ionic bonds result when electrons are tranfered between atoms. Covalent bonds result when valence electrons are shared between atoms. You should be able to identify whether an ionic or covalent bond is being formed between atoms.
Amino acids because the monomer for proteins is “Amino Acids”
Answer: Prophase
Do check if the answer’s correct, it’s been long since I’ve looked into the stages.