Answer:
Question 1:
The topic is: Three animals on a journey
Question 2:
The main idea of this book is:
Three animals risk their lives to return home
Question 3
It says that walking is less costly than other activities because it needs no equipment.
Question 4
Walking is too easy for those who exercise regularly.
Question 5
Walking is low impact, requires no fancy equipment, less likely to cause injury.
Question 6
That makes walking a simple activity for those new to exercise