The correct answer is D. He believed the federal government needed more power.
Explanation
In this quote George Washington wanted to say that he supported the federal system. The federal system is a governmental system that consists of the self-government of every state in a country, and a general or national government. This implies states have some level of independency but are still ruled by the national government. George Washington preferred the federal system because he believed that it was better to be united. After all, every state has different characteristics and without the national government this would lead to 13 different nations rather than only one united nation. According to the above, the correct answer is D. He believed the federal government needed more power.