Why is evolution by natural selection now considered a theor

Why is evolution by natural selection now considered a theory rather than an hypothesis? (select all that are true)

Solution

a) because it has been proven beyond a shadow of doubt

c)   because it has been supported by continued testing

The Theory of Evolution by Natural Selection is the best explanation for the fact of evolution. It has been tested and scrutinised for over 150 years, and is supported by all the relevant observations.