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: Tommy traded in his four-cylinder Pinto for an eight-cylinder Mustang. The Pinto engine was
Option1: more powerful
Option2: less powerful.
Explanation: The more cylinders a car engine has, the more powerful its engine can be.

SOLUTION: less powerful.

PROBLEM: 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.

SOLUTION: greater

PROBLEM: Question: John turned up the thermostat in his room. As the temperature of the room got higher, would the air pressure in the room
Option1: decrease?
Option2: increase
Explanation: Decreasing air temperature increases atmospheric pressure.

SOLUTION:
decrease?