Teacher: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).
Teacher: Now, understand the problem? Solve this instance: Paragraph: At higher elevations, there is less air to press on a given area.
 Question: As Brian climbed Mount Everest, there was _____ air. 
 Choices: A)more 
B)less
Student:
less