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).

Paragraph: For example, more people on the Earth means more people contributing to global warming and pollution.
 Question: What will happen to the levels of pollution on Earth if the population decreases? 
 Choices: A)they will rise 
B)they will fall
they will fall

Paragraph: The greater the objects mass, the greater the force of gravitational attraction.
 Question: When two things are small they have what level of gravitational force? 
 Choices: A)High 
B)Low
Low

Paragraph: Thicker wires offer less resistance.
 Question: If Mona is building a new electrical system and she installs thinner wires then were previously there, what can she expect to happen to the resistance of the system? 
 Choices: A)increase 
B)decrease
increase