The word" obtuse" (Line 1 ,Paragraph 1) probably means

A．The beginning of Renaissance under the circumstance of disintegration.
B．The worst phase that mankind is at now and in the fourteenth century.
C．The book of Hundred Year's War.
D．The afflictions of the fourteenth century.

A．make a comparison between the state of affairs at that time and at this moment.
B．get a clear picture of what we human beings are really like today.
C．prove what the French medievalist had written in his book was reasonable.
D．find the difference between what can be reflected in history and what can be easily found.