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: New farm machines were invented. They increased the amount of food that could be produced. With more food, people were healthier and could live longer.
 Question: A decrease in food will likely lead to _____ lifespans. 
 Choices: A)shorter 
B)longer
Student:
shorter