Answer: I think you can't buy happiness .
Explanation: You can't buy happiness with money because happiness is feelings , and no one can buy love.
Choice B. Line ten introduces this factor by saying "Finally, people's attitude towards a situation determines how they feel about crowding."
What do you mean fix the 'vague' if you're listing something you say this“ cake consisted of Belgian chocolate, butter and cinnamon. I knew the writer would like the cake because it had cinnamon. his favorite"