What happens during photosynthesis

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Monomers are the building blocks of larger molecules, called polymers. for example, proteins are composed of chains of amino acids that are linked together. cellulose is a polymer that makes up plant cell walls. cellulose is made from a chain of c6h10o5 molecules. which monomers are most likely used to produce cellulose? why?

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above