The correct options are
A It helped in ensuring and improving basic school amenities.
B It helped in ensuring education to girls, scheduled castes, scheduled tribes and minorities.
Operation Blackboard focussed on improving the standard of schooling. It had a good impact on the primary education of the country. The operation ensured that basic amenities such as classrooms, teachers and other education equipments are given. In 1994, there was an addition to these objectives. This change ensured that girls minorities, scheduled castes and tribes were provided primary education.