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).

[EX Q]: Paragraph: Water density increases as salinity and pressure increase, or as temperature decreases.
 Question: As Cindy swam closer to the ocean surface, it got lighter and _____. 
 Choices: A)warmer 
B)cooler
[EX A]: warmer

[EX Q]: Paragraph: Rougher surfaces have more friction between them than smoother surfaces.
 Question: A piece of sandpaper was rubbed across a glass table, then the sandpaper was rubbed across some gravel. The friction will be less between 
 Choices: A)the sandpaper and the glass table or 
B)the sandpaper and the gravel.
[EX A]: the sandpaper and the glass table or

[EX Q]: Paragraph: Pigments in the skin act like a filter that can prevent the skin from making vitamin D. As a result, people with darker skin need more time in the sun than people with lighter skin to make the same amount of vitamin D.
 Question: Polly was out in the sun. She has light skin. Her skin likely absorbs _____ vitamin D than a dark-skinned person. 
 Choices: A)more 
B)less
[EX A]:
more