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: If Jim is screwing in two bolts and the first one has threads that are close together while the second one has threads that are far apart, which one must he apply less force to? 
 Option1: first bolt 
 Option2: second bolt 
 Explanation: The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.
second bolt

Question: If Jim increases the amount of field lines drawn what will happen to the strength of the field? 
 Option1: decrease 
 Option2: increase 
 Explanation: The more field lines that are drawn, the stronger the field.
increase

Question: John was studying skin disease in his research lab. He observed that the less UV rays that contact the skin resulted in skin cancer rates becoming 
 Option1: Larger 
 Option2: Smaller 
 Explanation: More UV rays increase skin cancer rates.

Smaller