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: Mike needed to get a dark picture . In order to get the darkest photo, Mike made the exposure 
 Option1: longer 
 Option2: shorter 
 Explanation: The longer the exposure, the more light that the telescope can gather to make the image.
answer:
shorter


question:
Question: Derek is diving into the ocean. The pressure at the surface will be light, and the pressure the shallower he goes will be 
 Option1: stronger 
 Option2: weaker 
 Explanation: Pressure: Pressure increases with depth, but increased pressure raises the melting temperature, so melting of rock is less likely to occur at higher pressures.
answer:
weaker


question:
Question: Will adds salt to the pot of water. The water's volume is now 
 Option1: less dense 
 Option2: denser 
 Explanation: If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.
answer:

denser