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.

[Q]: Question: Katie is rubbing her hands on her leg. One hand rubs fast, the other hand rubs slow. The hand that will be cooler in the end is the one that moves 
 Option1: faster 
 Option2: slower 
 Explanation: Friction causes the molecules on rubbing surfaces to move faster, so they have more energy. This gives them a higher temperature, and they feel warmer.
[A]: slower


[Q]: Question: Jan had a very low heart rate, but was perfectly healthy, indicating that her heart expels blood in amounts that are 
 Option1: greater 
 Option2: lesser 
 Explanation: When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.
[A]: greater


[Q]: Question: If Mona is comparing fossils she found in very old rocks to fossils she found in newer rocks. Which fossils does she expect to be more similar to living animals? 
 Option1: old rocks 
 Option2: newer rocks 
 Explanation: In general, fossils in older rocks are less similar to modern organisms.
[A]:
newer rocks