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.

Input: Consider Input: Question: A scientist sees that some galaxies are closer together than before, so they know that the universe's expansion is 
 Option1: less 
 Option2: more 
 Explanation: As the Universe expands, galaxies move further and further apart.

Output: less


Input: Consider Input: Question: A rock has more mass than a pebble. Which object will exhibit a smaller force of attraction? 
 Option1: rock 
 Option2: pebble 
 Explanation: The greater the objects mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction.

Output: pebble


Input: Consider Input: Question: An decrease in birth rates indicates a/an _____ in the food supply. 
 Option1: decrease 
 Option2: increase 
 Explanation: Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.


Output: decrease