Is It Possible for Scientists to Study Events That Happened

Is it possible for scientists to study events that happened or animals/plants that lived millions of years ago?

A) Yes.Apply the laws of physics and nature that we know exist today to evaluate the evidence of past events.For example,observe modern animal behavior,structure,and function,and compare them to the structures of fossilized animals to deduce the function of the fossilized structures.
B) No.The laws of physics that exist today are not the same laws of physics that existed in the past,so there is no way to compare plant or animal fossils to those of modern organisms and deduce the function of fossilized structures.
C) Yes.Genetic manipulation of fossils allows scientists to directly test metabolic and behavioral characteristics of plants and animals from the past.
D) No.There is no way to analyze plant or animal fossils that lived millions of years ago because the laws of nature that exist today have changed dramatically from the past.