Answer:
Ribose nucleotide monomer
Step-by-step explanation:
It shows a nucleic acid monomer. This is apparent because this a 5-carbon cyclic ring with a phosphate molecule bonded to its 5’ carbon and a nitrogenous base bonded to its 1’ carbon. This nucleic acid is the basic unit of RNA because its pentose sugar is a ribose sugar (distinguishable from its 2’ carbon that has an –OH unlike a deoxyribose sugar of DNA that has only -Hs).