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: Katie wants to get light to turn to rainbow colors by using a lens to filter the light through. In order to get the most colors, Katie will use a lens that is 
 Option1: flat 
 Option2: curved 
 Explanation: The more curved the surface of a lens is, the more it refracts the light that passes through it.

Answer: curved


Question: Question: If a product is stretched, elastic force will 
 Option1: increase 
 Option2: decrease 
 Explanation: The elastic force increases the more the material is stretched or compressed.

Answer: increase


Question: Question: If Mona's body experiences less volume of blood in her blood vessels, what is happening to the pressure in her vessel walls? 
 Option1: increasing 
 Option2: decreasing 
 Explanation: This is because the lower blood volume in the vessels exerts less pressure on the vessel walls.

Answer:
decreasing