TASK DEFINITION: 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.
PROBLEM: Question: As you travel through the ozone layer the temperatures become 
 Option1: higher 
 Option2: lower 
 Explanation: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.

SOLUTION: higher

PROBLEM: Question: If Jim increases the size of his base, what will happen to the rate of hydroxide ion production? 
 Option1: increase 
 Option2: decrease 
 Explanation: A stronger base produces more hydroxide ions than a weaker base.

SOLUTION: increase

PROBLEM: Question: For dating the age of a fossil, and compared to the isotope Francium with a 22 minute half-life, would Carbon 14 with its 5730 year half-life be a 
 Option1: less useful isotope? 
 Option2: more useful isotope 
 Explanation: Because these isotopes decay more slowly, they can be used to date much older specimens.

SOLUTION:
more useful isotope