In this question, we need to identify the options in which we will have the flow of electricity, therefore a high level of conductibility.
Lithium bromide in a solution will be a great candidate to it, here we have a metal and a nonmetal bonded through an ionic bonding, and when they are in a solution and go through an ionic dissociation, they will produce charged ions, Li+ and Br-, this will conduct electricity
Graphite is a compound formed with 3 covalent bonds between the carbon atoms, and since carbon atoms can make up to 4 bonds, there will be delocalized electrons in this compound, making it easier for the current to flow.
Therefore the answers will be II and V, letter A