You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Q: Paragraph: For a given medium such as air, sound has a slower speed at lower temperatures.
 Question: Mike wants his voice to travel faster, so he will speak in a room that is 
 Choices: A)colder 
B)warmer

A: warmer
****
Q: Paragraph: For a given medium, sound has a slower speed at lower temperatures.
 Question: If Jim turns the thermostat down in his room while listening to music, what will happen to the speed of the sound waves in the room? 
 Choices: A)they will speed up 
B)they will slow down

A: they will slow down
****
Q: Paragraph: In electromagnetic waves with higher frequencies, photons have more energy.
 Question: Don is looking at electromagnetic waves, and sees that the one's he observing have lower frequencies. Don is able to know then that the photons have energy that is 
 Choices: A)higher 
B)lower

A:
lower
****