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: Differences in air pressure over the surface of the Earth result in wind. The greater the differences in air pressures, the stronger the wind.
 Question: Lana is noting that the wind lately has been very weak. Lana can now tell that the air pressures over the Earth's surface have had differences that are 
 Choices: A)greater 
B)lesser
lesser

Paragraph: The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.
 Question: Bob increased the rope segments on his pully; this means he will need to use _____ force on it. 
 Choices: A)more 
B)less
less

Paragraph: In erosion, a slower moving stream will only carry smaller particles.
 Question: John was watching the movement of a stream in the forest. He noticed that the slower moving stream would only carry particles that are 
 Choices: A)Larger 
B)Smaller
Smaller