Concept:Operation Black Board is a government scheme to improve basic facilities in primary schools.
Explanation:This scheme was launched in 1987–88 under the National Policy on Education (NPE) 1986.
Its goal is to provide minimum essential facilities to all primary schools.
Facilities include at least one room per class, two teachers, separate toilets for boys and girls, and teaching-learning materials.
The scheme focuses on the primary level of education, not middle, secondary, or convent schools.
Answer:Option A: Primary schools