The most accurate summary of Kaku’s argument is: <span>Amber has allowed scientists to study DNA that has been preserved over millions of years
Amber fossils isolate them from any oxygen that could prevent the preservation of their tissue. This allows the body to maintain it's formed for a long period of time.</span>
Assuming that the words what you wore to the party was the bold one, those are noun clause
That clause refer to an object which is the dress or the suit that the person being asked wore to the party
hope this helps
Your correct answer is D.