Which institution kept learning alive in europe during the middle ages?

The Middle Ages were the time where population decline, invasions, and movement of peoples away from the cities hampered economic development and learning. The only institution that preserved Roman texts about technology, politics and other sciences is the Church.  The structure of the Church, and the million hours of labor done by monks in writing and translating books, helped the population during times of  endured economic and civic upheavals.

answer; /// i believe that the correct answer is (b)///they gained vast amounts of

richard nixon led the investigation that resulted in alger hiss being convicted of prejury.