Answer:
The correct answer will be option B.
Step-by-step explanation:
Scientific theories are unsubstantiated ideas and opinions which best explains about any natural phenomenon based on observation and experiments.
In the given question "Species evolve by passing on advantageous hereditary traits" can be considered as a scientific hypothesis because this statement gives the explanation of "How the species evolve ?" which based on the observations, other hypothesis and evidences has been verified multiple times.
Thus, option B is the correct answer.