TASK DEFINITION: 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.
PROBLEM: Question: If someone has a smaller than average physical heart then it will beat _____ in order to pump blood. 
 Option1: more 
 Option2: less 
 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.

SOLUTION: more

PROBLEM: Question: Will waves on the ocean be larger or smaller if they are caused by wind compared to rocks? 
 Option1: larger 
 Option2: smaller 
 Explanation: A wave caused by a disturbance with more energy has greater amplitude.

SOLUTION: smaller

PROBLEM: Question: What will happen to the effect on ocean tides if the Moon were to move closer to the Earth? 
 Option1: greater effect 
 Option2: smaller effect 
 Explanation: The Moon has a greater effect on the tides because, although it is much smaller than the Sun, it is much closer.

SOLUTION:
greater effect