Problem:OPTIONS:
- Pollution
- Energy.
- thrust
- energy
- glycogen
- deadly
- motion
- heat

You are presented with the quiz "What do cars use gas to produce?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "acar engine usually converts gasoline into motion and heat through combustion" and "combustion is never complete in gasoline and diesel engines". So, what's the best answer to the question?
****
A: motion

Problem:OPTIONS:
- is born
- apoptosis
- contracting
- smoking
- falls ill
- symptoms
- feels well
- is happy

You are presented with the quiz "If a person does what it may be due to a pathogen?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "bacteria can cause people to become ill" and "bacteria that cause disease are called pathogens". So, what's the best answer to the question?
****
A: falls ill

Problem:OPTIONS:
- superpowers
- symptoms
- disease
- enhanced health
- blood
- good fortune
- bacteria
- toxins

You are presented with the quiz "Scraping oneself on a contaminated object may lead to what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scraping oneself on a contaminated object may cause infection" and "some infections lead to disease". So, what's the best answer to the question?
****
A: disease

Problem:OPTIONS:
- uneven heating
- volcanoes
- hurricanes
- Physical weathering
- It gets heated up
- Water expanding
- even heat
- Greenhouse gases

You are presented with the quiz "What causes hurricanes on the Earth's surface?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "uneven heating of the Earth 's surface cause wind" and "hurricanes are made of wind". So, what's the best answer to the question?
****
A:
uneven heating