Question

Which of these would be a valid scientific hypothesis? human history is determined by a series of supernatural events. humans should help in the conservation of other animal species. humans are controlled by forces beyond our understanding. humans and bacteria share a common genetic code?

Answer 1

The correct answer is: humans and bacteria share a common genetic code.

This could be a valid scientific hypothesis because it is testable.

To be valid scientific hypothesis it has to  has to be something that can be supported or refuted through experiments or observation.