B. Last year ... 1) Dusty and dirty. People there were talking loudly. 2) Very poor, there wasn't many books there. 3) Quiet and comfortable, with books about everything.

Решение:

В тексте сказано: «Mark liked the library very much. There were flowers everywhere and it smelled nice and it was quiet so he could read the book in comfort.»

Ответ: 3) Quiet and comfortable, with books about everything.