Fortunately it is as yet only through fantasy that we can see what the destruction of the scholarly and scientific disciplines would mean to mankingd. From history we can learn what their existence has meant. The sheer power of disciplined thought is revealed in practically all the great intellectual and technological advances which the human race has made The ability of the man of disciplined mind to direct this power effectively upon problems for which he has not specifically trained is proved by example without number. The real evidence for the value of liberal education lies in history and in the biographics of men who have met the valid criteria of greatness. These support overwhelmingly the claim of liberal education that it can equip a man with fundamental powers of decision and action, applicable not only to boy-girl relationship, to tinkering hobbies, or to choosing the familyy dentist, but to all the great and varied concerns of human life ------ not least, those that are unforeseen.
According to the author, 'the great and varied concerns of human life' are about

Options

A. fundamental rights
B. challenges facing mankind
C. tinkering hobbies
D. liberal education