Correct option is D
Analysis of the Inference:
The given facts strongly support the inference that classrooms in most of the primary schools in Bihar are inadequate. The evidence regarding pupils studying in the open and the lack of basic infrastructure supports this claim. However, since the information does not conclusively state this for "most" schools, the inference is probably true but not definitely true.
Correct Answer:
D. If you think the inference is 'probably true' though not definitely true in the light of the facts given