The best way to rewrite the sentence while ensuring correct usage of standard written English is:
B: "The moral of the entire story is that money doesn’t make you happy."
This option uses the phrase "is that" to clearly present the moral, which is more grammatically correct and natural in structure.
The correct option is (B): The moral of the entire story is that money doesn't make you happy.
If the President knew that his allies would let him down so suddenly, he would have handled them with the greatest care.
Among scientists, the discovery of the double helix structure of DNA and the genetic code it incorporates is widely regarded to be one of the most significant scientific discovery of the twentieth century.
Thank goodness, the damage to the car was \(\underline{neglectful.}\)
Although the new policy aims to increase efficiency, reducing costs, and enhancing employee satisfaction, some employees feel that the changes are too abrupt and poorly communicated.
When I had to leave town due to office work, I had my brother to give food to my dog twice a day.