Which of these viruses is responsible for causing shingles?
rubella virus
measles virus
varicella-zoster virus
variola major virus

Option C, varicella-zoster virus

Explanation:

The synonym for varicella-zoster virus is VZV and it is responsible for causing chicken pox in primary infection and shingles after the reactivation of latent VZV infection

It is a DNA virus that belong to the group of  herpesvirus. All herpesviruses have the capability to persists in the body after primary infection as latent infection. These viruses survive for a short duration in the environment.

Hence, option C is correct.

a polymer is a chainlike molecule made up of small molecular units. these small molecular units are called monomers. monomers of polymer can be joined together either naturally or synthetically.  

answer; /// i believe that the correct answer is (50%);