Molecular evidence in support of natural selection includes

a. the nearly universal genetic code.

b. the presence of vestigial structures.

c. a tendency toward perfect, unchanging DNA in various species.

d. the transmission of acquired characteristics by DNA.

Natural selection is the process in which the organism that is fit is adopted by the environment and it survive

Molecular evidence in support of natural selection includes

the nearly universal genetic code

because all the organisms have same genetic code and this evidence support the natural selection at molecular level

so correct option is A

hope it elps