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: Jeff found some very dense water. He knows it is dense because it takes up _____ space than less dense water. 
 Option1: more 
 Option2: less 
 Explanation: More dense water takes up less space than less dense water.

A: less
****
Q: Question: If a Geiger counter is silent in an area, there is _____ reason to worry about radiation. 
 Option1: little 
 Option2: much 
 Explanation: The faster the clicks of a Geiger counter occur, the higher the level of radiation.

A: little
****
Q: Question: If Milo wants to increase the rate at which his bonfire is burning, what should he do to the temperature? 
 Option1: decrease it 
 Option2: increase it 
 Explanation: When the temperature of reactants is higher, the rate of the reaction is faster.

A:
increase it
****