instruction:
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:
Question: David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass attaches, allowing the rocket to go 
 Option1: higher 
 Option2: lower 
 Explanation: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.
answer:
lower


question:
Question: You are conducting an experiment on alkenes and discover that your smaller alkenes have _____ boiling and melting points than the larger ones. 
 Option1: lower 
 Option2: higher 
 Explanation: Larger alkenes have lower boiling and melting points.
answer:
higher


question:
Question: If the amount of chemicals inside of Jim's lungs decreases, what will happen to the amount of air his lungs can process? 
 Option1: increase 
 Option2: decrease 
 Explanation: When a person smokes there are chemicals released by the tobacco that enter the lungs. Because the lungs have to work harder to remove the chemicals, the body has to work harder to get the air needed to survive.
answer:

increase