Recent breakthroughs in medical research have
a) led to advancement in robotics
b) prevented potential drug interactions
c) improved understanding of genetic diseases
d) unable to foster collaboration among doctors

C) improved understanding of genetic diseases

Explanation:

In the last decades, medical research has evolved greatly and brought improvements to people's quality of life, through new discoveries about the functioning of the human body, new remedies and ways of treatment, among others.

One of the areas in which a remarkable evolution was perceived was genetic research. There is now a better understanding of how hereditary features are related to diseases, as well as a better understanding of the genetic diseases themselves, such as diabetes. Thus, people are being better monitored and treated so as to live longer and with a higher quality of life.

the answer is they believed george iii would never give them their freedom.