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.

Q: Question: Devon's cat, Fluffy, is looking for a nice warm spot to lay out in the sun. Because of how the sun heats the earth, and how some heat radiates into the air, the cat laying on the ground, rather than high up in a tree branch, would keep the cat 
 Option1: cooler 
 Option2: warmer 
 Explanation: The surface is heated by the Sun and some of that heat radiates back into the air. This makes the temperature higher near the surface than at higher altitudes.

A: warmer
****
Q: Question: Ed is adding a resistor to a circuit. If he needs it to have more resistance, he should add a resistor that is 
 Option1: shorter. 
 Option2: longer 
 Explanation: Longer length resistors will offer more resistance than shorter resistors.

A: longer
****
Q: Question: Dane is checking the pH of his project and sees that it is quite high, which means that the acid in his project is 
 Option1: higher 
 Option2: lower 
 Explanation: Lower pH numbers are more acidic and higher numbers are less acidic (also called more alkaline).

A:
lower
****