Charles Lyell influenced Darwin's thinking by suggesting that:
a. Animal species represented by remains in the fossil record went extinct as the result of catastrophic events
b. Organisms were not fixed and could adapt to their environment over time
c. Offspring could inherit characteristics acquired during their parent's life
d. Processes that had shaped the Earth in the past are the same ones seen today
e. Populations have a nearly infinite capacity to grow in size yet their resources are finite