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: Larger alkenes have lower boiling and melting points.
 Question: You are conducting an experiment on alkenes and discover that your larger alkenes have _____ boiling and melting points than the smaller ones. 
 Choices: A)lower 
B)higher
lower

Paragraph: The closer together the particles in a longitudinal wave are, the greater the amplitude.
 Question: Causing particles in a longitudinal wave to come together causes the amplitude to 
 Choices: A)decrease 
B)increase
increase

Paragraph: The greater the objects mass, the greater the force of attraction; in addition, the greater the distance between objects, the smaller the force of attraction.
 Question: A rock has more mass then a pebble. Which object will exhibit a greater force of attraction? 
 Choices: A)rock 
B)pebble

rock