All the given options are generally good moves for a person, but not all of them are directly related to expanding one's network.
One correct option would be how Ray can initiate a relationship with someone who can help him get ahead in his career. This allows him to gain contacts in the same industry or in adjacent careers.
The other correct answer would be to get an inside perspective into the company where he would like to work. He would get to know its current employees and this would expand his network.