Answer: Wealthy people have more willpower than poor people
Explanation:
The implied main idea of this reading is that wealthy people have more willpower than poor people.
This can be deduced from the passage that while the children from poorer families were more likely to eat the first marshmallow than wait, due to the fact the future is uncertain, the wealthier children found it easier to hold out, because they believed that their needs will be met.
The clue word "however" almost always indicates a "contrast". This is because when using this word, the writer can on one hand agree with what he or she is saying, but offer a different point of view to be considered.
I believe the temperature of the ocean would be cooler due to the cool breeze hope this helps :)
