In OSPF, to reduce the number of routes advertised by type 3 LSAs to other areas and to summarize routes at an area boundary, the area range command is used on the Area Border Router (ABR). The correct command should specify the area that contains the networks you want to summarize (in this case, Area 1) and include a summary address that encompasses all of the networks you wish to advertise as a single route.
Option D is correct because it specifies Area 1, which is where Atlanta router interfaces are located according to the exhibit provided in your question (assuming that Atlanta is an ABR between Area 1 and Backbone Area
0). The IP address range 192.168.0.0 with a subnet mask of 255.255.248.0 correctly summarizes the subnets 192.168.x.x/24 where x ranges from 0-7, which would include all subnets from 192.168.0.x through 192.168.7.x.