The way in which the third sentence ("That makes walking …") supports the central idea of the paragraph is B. It points out that walking is a good introduction to exercise for beginners.
This refers to the physical activity that a person engages in to get and keep fit.
Hence, we can see that The way in which the third sentence ("That makes walking …") supports the central idea of the paragraph is B. It points out that walking is a good introduction to exercise for beginners.
Read more about central ideas here:
https://brainly.com/question/2684713
#SPJ1