The capsid and docking proteins function in three ways to the virus attack the host cell. the functions include all but
a) protects the nucleic acid from digestion by enzymes.
b) encodes the genetic message for the synthesis of new proteins
c) contains special sites that allow the virus to attach to its host.
d) provides proteins that allow the virus to penetrate the host cell membrane.

The correct answer will be option- B.

Explanation:

A virus is an infectious particle which contains protein molecules- capsid and docking proteins and the genetic material like- DNA and RNA.

The capsid is the shell of virus made up of proteins called protomers which form a 3-D structure unit. The capsid encloses the genetic material of the virus elements, contains attached proteins which helps in penetration like tail proteins of the bacteriophage and the receptor proteins to attach the virus to the host cell.

Thus, Option-B is the correct answer.

answer; /// the correct )