He was a close friend to Charles Darwin so he helped him out in creating the theory of evolution so I would say C: He developed the idea of inheritance of acquired characteristics.
The idea Charles Lyell subscribes to is he developed the idea of inheritance of acquired characteristics.
Charles Lyell is a Scottish geologist.
He gave a theory that the earth is made up of small changes over a long period of time.
Darwin was influenced by his theory of uniformitarianism.
He thought that earth is 7 hundred million years old.
Thus, the correct option is C.
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