'The great fault of our present age is its emphasis on efficiency at the cost of humanity.' This extract from the passage shows that the main idea of the author in this passage is that- Education should emphasize improvement in the quality of life rather than efficiency. You may be confused between option A and B, but it is important to remember that option A only encapsulates the 'humanity' aspect of the passage, whereas, option B captures both aspects: humanity and efficiency thus making it a much more complete answer. Options C and D are not mentioned in the passage.