Final answer:
In the United States, around 6% of medical school graduates enter general practice, which has impacts on the overall high costs of healthcare and the accessibility to primary care for people in the US.
Step-by-step explanation:
The high costs of medical care in the US have been attributed to a variety of factors, one of which is the small percentage of medical-school graduates entering general practice.
This has been linked to the high healthcare spending and poorer health outcomes in the United States when compared to other high-income nations.
Based on the provided information and looking at the sector breakdown, it appears that around 6% of medical school graduates are going into general practice, as the given data suggests a percentage allocation for employment sectors where medical school graduates may work.
Therefore, the correct response to fill in the blank would be 'only about 6 percent of all medical degrees went to general practitioners.'