This one: "Lee noticed a problem and alerts a teacher".
The second verb should not have been changed to present tense.
You should change the verb alert to past tense: "Lee noticed a problem and alerted a teacher".
My best guess is B. The town shoemaker marries a beautiful young maiden despite the wishes of her rich family. During the 14th century, the theme of chivalric romance and love is emerging and growing in literature. It is unlikely that the other options would fit the historical context because there are no such things as trolls, young girls would never be able to survive on their own, and a sailor would not have the resources to travel to every country (particularly because not many were known during the time period).
Answer:
it makes life easy and fast and helps us learn new facts
