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: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.
 Question: Ian wants to produce less pollutants, so he buys a car that is a plug-in hybrid. The car will run on electricity better if it's plugged in for a 
 Choices: A)longer time 
B)shorter time
[EX A]: longer time

[EX Q]: Paragraph: The stratosphere contains the ozone layer, the temperatures increase as altitude increases.
 Question: As you travel through the ozone layer the temperatures become 
 Choices: A)higher 
B)lower
[EX A]: higher

[EX Q]: Paragraph: In erosion, the higher the elevation, the farther the stream is from where it will reach base level and the more cutting it has to do.
 Question: A stream in a state with a higher average elevation will have to do _____ cutting to reach base level that in a state with a lower average elevation. 
 Choices: A)more 
B)less
[EX A]:
more