they should use Ethernet! it offers fast and easy setup, and is just plug and play!
"I am" statements are very well to communicate with people about your feelings in a non confrontational manner.
There are certain skills that are required to be a good team member or team leader. A main characteristic of the required skills would be those that can be used in interacting with other people, since that is a main feature when working in teams.
From the given options, only one skill would be most suitable to be used when dealing with other people, which is (C) listening.
"javac <FILE NAME>" (unsurprisingly, stands for "java compile"), will compile your java source code in to a .java file, that can be run with the "java <FILE NAME>" command.
Make sure that your command prompt is set to the right destination when you run these commands, using "cd <DESTINATION>", otherwise they may be unable to find them in the incorrect destination.