Question

What would be the most common cause of deterioration to a fifteenth-century book?

Incorrect answer A. Rodent damage
Correct answer B. Mold
Incorrect answer C. Corrosion
Incorrect answer D. Natural disaster

Answer 1

Poor handling is the primary cause of deterioration for books, manuscripts, and ephemera; however, a poor environment can also be a cause of deterioration for books and paper.

A B, and D could all be reasons why.

But, Next to the questions it says which one is correct so there you go.

Hope this helps!