The correct option is B If the inference is 'probably true' though not 'definitely true' in the light of the facts given
The passage states that more than one-third of India remains largely underfed. However, the passage does not provide the reader with any other statics or information through which we could definitely conclude that the given inference holds 'definitely true'. In this context, we can conclude that the given inference is 'probably true' though not 'definitely true'. Thus B is the best answer.