300
Multiple Choices
The server has accepted the request, but the said resource has more than one representations. The server sends back each of the alternatives, so that the client can decide which one it wants and make the request for it.
Use Case
A client has asked for particular webpage in English language and the server responds with a 300 response including the list of specific locales for English like 'en-US', 'en-UK', etc. for the client to decide which on it wants.