A CentOS 7 VM is running in virtualbox inside a Windows 8.1 host. I am trying to set up Bridged Networking, but am getting the following error highlighted in green in the print screen:

However, when I try to adapt to the error message by selecting a Bridged networking adapter, there are no options from which to select, as shown in this print screen:

Note: In case it matters, I am using a one-to-one wired Ethernet connection between the above described devbox computer and a development server whose only connection is through the wire to this devbox. I set up the host OS' ability to ssh from the devbox to the development server by following advice from this other posting, and now I am trying to set up the VM's ability to ssh to the development server by following this second other posting encountering the problems shown above.

So how do I select a bridged networking adapter in virtualbox and thus resolve this error by successfully configuring bridged networking?