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 larger 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: less

PROBLEM: Question: If Mona is exploring different continents and she notices that Africa is cooler then North America, which continent will have more types of vegetation? 
 Option1: North America 
 Option2: Africa 
 Explanation: The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

SOLUTION: North America

PROBLEM: Question: If Mona is measuring atoms and she finds out that one atom is larger then another, what does that imply about the distance of electrons from the nucleus of that atom? 
 Option1: closer together 
 Option2: farther away 
 Explanation: In bigger atoms, valence electrons are farther from the nucleus.

SOLUTION:
farther away