Using our five sense help us when we are in danger , need to listen/hear something ,it also helps us recognize stuff. the five senses help us hear, smell, taste and touch and that is very important to experice the world around us.
When the narrator said "Grandfather believed that a well-rooted tree was the color of money", he meant that the tree gave Grandfather food for him and his family to survive.
:)
The answer is B.
Hope this helps.
Realistic, remarkable, respectable, reliable, radiant.
Let me know if you need more.