input: OPTIONS:
- Tapeworm.
- Leeches.
- Pesticides
- animals
- insects
- Hookworm
- bacteria
- Bracelet. Now, answer this question: You are presented with the quiz "What unwanted creature would be found on the surface of a human body using it as a host? " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "some parasites live on the surface of their host" and "leeches are external parasites". So, what's the best answer to the question?
A:
output: Leeches.
You are presented with the quiz "What heats most of the Earth's surface during the day?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "absorbing energy causes objects to heat" and "sunlight shines through the atmosphere and is absorbed by the Earth's surface". So, what's the best answer to the question?

OPTIONS:
- sun light
- Solar energy
- rain
- light
- calcite
- automobiles
- magma
- energy

Answer: sun light
Problem: OPTIONS:
- bacteria
- a hazard
- cold weather
- humidity
- mildew
- PDAs
- injury
- methane
Q: You are presented with the quiz "Pneumonia may be caused by viruses or " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "pneumonia may be caused by an infection or injury of the lungs" and "infections of the lungs can be caused by bacteria, viruses or fungi". So, what's the best answer to the question?
Answer: injury
Problem:OPTIONS:
- dogs
- spread flower seeds
- bacteria
- animals
- more abundant
- invertebrates
- honeybees
- worms

You are presented with the quiz "What are insects? " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arthropods are the largest phylum of invertebrates" and "insects are the largest group of arthropods". So, what's the best answer to the question?
****
A: invertebrates
You are presented with the quiz "What is formed by rivers?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "soil is formed by rocks eroding" and "rivers erode the rocks they flow over". So, what's the best answer to the question?
OPTIONS:
- fish
- soil
- rain
- bamboo
- spring
- clouds
- kayaks
- NaCl
soil
You are presented with the quiz "How are dogs trained on how to behave?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "playing is one way mammals and other animals learn how to behave" and "dogs learn many social rules through play". So, what's the best answer to the question?
OPTIONS:
- Summer
- during the day
- By getting older
- Movement
- exercise
- By sleeping
- Through walks
- Through play

Answer:
Through play