You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

Question: Would a star that is significantly cooler than the sun, which is outputting blue light which is higher in frequency that the yellow light of the Sun, be 
 Option1: hotter 
 Option2: colder? 
 Explanation: Shorter wavelengths (higher frequencies) correspond to higher energies and thus hotter star temperatures.
colder?

Question: Sue sees a star with a high frequency. Erin sees a star with a low frequency. The cooler star belongs to 
 Option1: Sue 
 Option2: Erin 
 Explanation: Shorter wavelengths (higher frequencies) correspond to higher energies and thus hotter star temperatures.
Erin

Question: Evan is a farmer and needs to plant on a slope. For a slower flow of water, he should choose a slope that is 
 Option1: steeper 
 Option2: gentler 
 Explanation: A gentle slope favours slower flow of surface water, reduces erosion, and increases availability of water to plants.

gentler