Set the weather for the scene
A book about a girl who got a necklace from her passed grandmother
I believe it is the compass. It aided sailors locate the direction to which they needed to go. Even before the age of exploration, people had ships capable of long voyages. As the years pass, the designed improved to an extent that they can travel farther.
The answer is A. You do not want to overdo the information you are giving, so you should limit it to one paragraph. <span />