A person of good understanding knowledge and reasoning power

Options

A. Cannons were able to knowck down stone walls, so castles offered little protection.
B. Wars were fought with guns and hiding in castles was no longer necessary.
C. Artillery forts with large cannons became more stylish that traditional castles.
D. Defending castles grew difficult, since attackers could just shot castle defenders.

Answer

A

Explanation

Cannons were able to knowch down stone walls, so castles offered little protection.