Answer: 2.8
Explanation: just took the quiz
The answer is D because it sounds like the most ethical answer. The other choices are wrong because the could possibly hurt someone or an animal.
the time it take for a planet to rotate on its axis makes up its day so if it were slower the day would be longer like earth, it take about 24 hours to make one full rotation.
Now for a year the distance from its star is the largest factor, because the further out the longer it takes to revolve around it, thus making a longer year.
I believe it is b. you only want to change one thing at a time so you know which one thing caused the effect
The answer is diagram A.
Hope this helped. Good luck!