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: Mary loves to dive in the ocean. What will happen to the water as she dives deeper? 
 Option1: darker 
 Option2: lighter 
 Explanation: The deeper you go, the darker the water gets.
darker

Question: Compared to an item with few carbon atoms an item with many carbon atoms will boil 
 Option1: faster 
 Option2: slower 
 Explanation: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.
slower

Question: Will plays with an adjustable ramp for his cars. He sets the angle at 25 degrees and then at 15 degrees. Which ramp angle requires more input force on the cars? 
 Option1: 25 degrees 
 Option2: 15 degrees 
 Explanation: The more gradual the slope of the inclined plane, the less input force is needed and the greater the mechanical advantage.

25 degrees