Lightness, light, lightly. Hope this helps you!
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>
I think this is from The Lottery, which means that the answer is most likely b or d. But for a more deep and analytical answer say d because the lottery in general is a very unusual topic, but b also works.
