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: Alkanes with more carbon atoms have higher boiling and melting points, so some of them are solids at room temperature.
 Question: Kathy did some experiments on two different alkanes and one of the alkanes had twice as many carbon atoms than the other. She would notice that which alkane would require a higher temperature to melt 
 Choices: A)alkane with fewer carbon atoms 
B)alkane with more carbon atoms?
alkane with more carbon atoms?

Paragraph: More people also means more clearing of land for agriculture and development.
 Question: When people leave an area what happens to the land? 
 Choices: A)cleared 
B)kept the same
kept the same

Paragraph: Water becomes more dense when it is colder and when it has more salt.
 Question: When water freezes into ice it becomes 
 Choices: A)less dense. 
B)more dense

more dense