Answer:
Some viruses, such as Influenza virus and HIV virus, also have an envelope which covers capsid. The envelope is an outer lipid bilayer that is studded with proteins.
A. An Arrhenius Acid releases H+ (which is same as H30+) ions in solution
Drawing a conclusion, you need the new data n order to complete that step.
Remain calm
Swim with the current
Draw attention ( if she does not now how to swim)
I think it is A. good luck