Answer:
This question is subject to opinion. In my opinion, being ignorant is more costly due to the fact that you may make misinformed decisions which could end up costing you in the long run.
Why do the boys fight?
What do you think Johnny’s last words mean?
Why do you think Dally wanted to die?
Why was Johnny’s death hard for Dally?
B) the authors include details about the changes in diets over time to inform readers about how sugar has transformed what we eat.