This is the annual essay issued by a cadet's Senior Army Instructor. The topic "Yesterday Today and Tomorrow" means that you should write about how national defense originated, how it's changed, and where it's projected to go in the future. You could also talk about your personal experience in jrotc.
He fits the archetype of the tragic hero.
Answer:
Of the following sentences which come closest to stating the main ideas in this paragraph are:
That makes walking a simple activity for those new to exercise.
Walking is less likely than other exercises to cause injury to leg tendons and muscles.
The paragraph inserts the points about the benefits of walking and being the simple exercise.
It emphasizes walking being the simplest activity and harmless. Further, through its main points, it inserts that the people new to exercise can adapt to it easily without causing any kind of injury to themselves.
Explanation: