Final answer:
Theodosius Dobzhansky stated that "Nothing in biology makes sense except in the light of evolution," which is key to understanding biological concepts. Hence, the correct answer is B.
Step-by-step explanation:
The evolutionary biologist Theodosius Dobzhansky is famous for stating, "Nothing in biology makes sense except in the light of evolution." This quote underscores the foundational principle that all life has evolved from a common ancestor and is key to understanding all questions in biology. The concept of evolution is not just a casual supposition but a unifying theory, extensively tested and broadly accepted in the scientific community, similar to the theory of gravity or the theory of relativity. Evolution through natural selection is a continuous process that contributes to the biodiversity and the complex tapestry of life on Earth. Hence, the correct answer to which statement Theodosius Dobzhansky is known for is B. "Nothing in biology makes sense except in the light of evolution."