Which of the following sports originated to improve the physical fitness for bedridden soldiers from World War 1? a. yoga
b. pilates
c. martial arts
d. running

b. pilates

Explanation:

"Pilates" is a form of exercise developed by Joseph Pilates, a German fitness instructor in the 1880s to 1900s. Though he grew up as a sickly kid, he later became a body builder and developed concern for people's poor health brought about by the relatively easier lifestyle of the modern world–which was coupled with a bad posture.

Later on, he developed the concept of pilates to teach and encourage people to become healthier. During World War 1, he used the physical fitness system to rehabilitate people who went to war. Most of these people were bedridden soldiers (including the prisoners of war). This aided them to gradually get their mobility back.