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.
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Question: Question: When we are increasing energy used while running what will happen? 
 Option1: speed up 
 Option2: slow down 
 Explanation: As the liquid particles lose energy, their movement slows down even more. As their movements become slower and slower, the attractive forces between become stronger.

Answer: speed up


Question: Question: Would Jim's solution become more or less acidic if he decreased the concentration of hydrogen atoms in it? 
 Option1: more acidic 
 Option2: less acidic 
 Explanation: With a higher the concentration of hydrogen ions, a solution is more acidic and has a lower pH.

Answer: less acidic


Question: Question: Dan was excited to try out an electromagnet but was later disappointed when it wasn't very effective. He knew however that if he changed the current he could make it stronger. How should he adjust the current? 
 Option1: decrease it 
 Option2: increase it 
 Explanation: The more current, the stronger the electromagnet.

Answer:
increase it