Answer:
C. The composition of the Genome
Step-by-step explanation:
Baltimore classified viruses based on genome such that they have common characteristics. He classified them into different classes to include
Double stranded DNA
Single stranded DNA
Double stranded RNA
Single stranded RNA
Single stranded RNA- positive sense
Single stranded RNA- negative sense
Single stranded RNA molecules that replicate through A DNA intermediate
Double stranded DNA viruses that replicate through a single stranded RNA virus