The correct option is D A school having two classrooms and a library
Operation Blackboard mainly focussed on improving the standard of schooling. For example, it ensured that schools met a list of minimum educational needs such as being equipped with at least 2 classrooms, toilets, at least one female teacher, maps, laboratory apparatus, a library, a playground, sports equipment, blackboards and many others like these.
A school having two classrooms and a library would be considered as better than the other options provided.