Question

Proposing an explanation for the changing colors of the sky is an example of a(n)

Answer 1

Answer : Hypothesis.

Explanation : Hypothesis is defined as the supposition or proposed explanation which can be made on the basis of limited available evidence as a starting point for further investigation. Here, in this question the proposed explanation for the changing colors of the sky is an example of a hypothesis.

A hypothesis has to be supported with scientific experiments which are reproducible by several experiments and test results have to be valid to be called as a scientific theory.

Answer 2

It's your hypothesis: The idea you have/proposed solution that you will then test.