Walking is an ideal exercise for people who . A. desire to engage in an activity that is easy on their joints B. desire to engage in a high-energy activity C. desire to engage in an activity requiring intense concentration D. desire to engage in an activity requiring high endurance Please select the best answer from the choices provided. A B C D

Walking is an ideal exercise for people who desire to engage in a activity that is easy on their joints.

Explanation:

The answer is A. (I kind of just used common sense) If you think about it why do walk to help your joints correct, and especially if you are going to join a sport or activity that will be easy on your joints.  

c) troops march forward in close formation against newer, more accurate weapons

the correct answer is a