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: Mona is flying in a hot air balloon. As she floats lower in the air the air temperature rises. What will happen to the air pressure? 
 Option1: increase 
 Option2: decrease 
 Explanation: Increasing air temperature decreases atmospheric pressure.

A: decrease
****
Q: Question: Derek's dad was now at a greater risk of getting a cardiovascular disease, even though nothing about his lifestyle or diet changed. The thing that did change is that his dad is now a 
 Option1: larger age 
 Option2: smaller age 
 Explanation: The older a person is, the greater their chance of developing a cardiovascular disease.

A: larger age
****
Q: Question: If Mary is blowing an air horn underwater and she raises the temperature of the water, what will happen to the speed of the sound waves generated by the air horn? 
 Option1: increase 
 Option2: decrease 
 Explanation: For a given medium such as air, sound has a slower speed at lower temperatures.

A:
increase
****