I answered the right option and I've been awarded with 1 point
I answered sp_filestream_configure because it was the closest option to what msdn says
in msdn they say to enable Filestream the command is
EXEC sp_configure filestream_access_level, 2
RECONFIGURE
check this link : http://msdn.microsoft.com/en-us/library/cc645923.aspx
and this answer wasn't in any option
thanks