Which discovery is attributed to phoebus levene? a: extraction and observation of dna b: identification of ribose and deoxyribose c: recognition of rna as dna’s messenger d: construction of an accurate dna model

The answer is B:identification of ribose and deoxyribose.

Phoebus Levene was a biochemist who studied the structure and function of nucleic acids. It was Levene, who distinguished  DNA from RNA, identified their components (DNA deoxyribose, RNA has ribose) and how they are linked together to form units( nucleotide).