modifies DNA in order to improve the host or its offspring
The answer is B. It is the only one where each element has the same number of molecules on each side.
The sequence is
DNA --> RNA --> Amino Acid
For example
GGC is your DNA
CCG is your RNA
And your amino acid would be PRO
2.
AAT --> AAU -->ASN
DNA ---> RNA --> AMINO ACID
3.
TCA --> UGA --> STOP
DNA --> RNA ---> AMINO ACID
You think about the junk while doing the junk to answer the junk.
i hope i helped (;