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: The Earth travels faster in its elliptical orbit when it is closer to the Sun than when it is farther away.
 Question: If the Earth is orbiting the Sun and it begins to move closer to it, what happens the speed the Earth is moving? 
 Choices: A)increase 
B)decrease

A: increase
****
Q: Paragraph: The more efficient a device is, the greater the percentage of usable energy it produces.
 Question: A very efficient pair of solar panels will produce 
 Choices: A)little energy 
B)a lot of energy

A: a lot of energy
****
Q: Paragraph: Because these isotopes decay more slowly, they can be used to date much older specimens.
 Question: Fred has an isotope that decays slowly. What is likely true about it? 
 Choices: A)it can be used to date older specimens 
B)it can't be used to date old specimens

A:
it can be used to date older specimens
****