Read the following passage and answer the questions given below it.

Japanese old style jujutsu, or Nihon Koryu Jujutsu, dates back to the Muromachi period in Japan between 1333 and 1573. This old style of martial arts training was focused on teaching the unarmed or very lightly armed warrior to fight a heavily armed warrior. This eventually led to the teaching of a significant amount of grappling, throwing, restraining and weaponry skills to Samurai. The term jujutsu began to take hold in the 17th century. At the time, it described all of the grappling-related disciplines in Japan that were used and taught by the Samurai. The name "jujutsu" means the "art of softness" or "way of yielding". Eventually, jujutsu evolved, changing with the times to the Nihon Jujutsu seen today. Generally, this more contemporary style is termed Edo jujutsu, since it was founded during the Edo period. The striking in these styles is not designed to be effective against armor since no one really wears armor anymore. However, it would be effective against a plain-clothed person. Jujutsu is characterized by using an attacker's momentum against him by guiding it in a way that the applier would prefer (and not the attacker). Jujutsu methods include striking, throwing, restraining (pinning and strangling), joint locks, weaponry, and grappling. It is truly best known for its effectiveness against weapons, use of throws and its locks.