You are presented with the quiz "What generally carries something bright red?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "arteries generally carry oxygen-rich blood" and "oxygen-rich blood is bright red". So, what's the best answer to the question?
OPTIONS:
- bears
- veins
- arteries
- mammals
- nerves
- fur seals
- Cars
- bones
arteries
You are presented with the quiz "What can warm the earth?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "burning fossil fuels increases the carbon in the atmosphere" and "increased atmospheric carbon dioxide increases greenhouse effect and warms the earth". So, what's the best answer to the question?
OPTIONS:
- evaporation
- burning fossil fuels
- our nearest star
- rain
- electromagnetic energy
- nuclear fusion
- heat energy
- magma

Answer: burning fossil fuels
Question: You are presented with the quiz "Where does a starfish have its water vascular system?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "echinoderms have a unique water vascular system with tube feet" and "each starfish arm is lined with tube feet". So, what's the best answer to the question?
OPTIONS:
- salt and water.
- Chlorophyll
- the environment
- in its arms
- on the rocks
- in its eyes
- Epidermis
- in the ocean
Answer: in its arms
input with options: You are presented with the quiz "What do muscle fibers need to do to enable movement?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "muscle contraction occurs when muscle fibers get shorter" and "movement is based on the contraction of muscles". So, what's the best answer to the question?
OPTIONS:
- Bend
- strength
- exercise
- ligt
- It expands
- shorten
- Vibrates
- stay warm
output: shorten
Q: You are presented with the quiz "What was formed by exoskeletons?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "many corals secrete an exoskeleton that builds up to become a coral reef" and "australia's coral reefs, including the Great Barrier Reef, are no exception". So, what's the best answer to the question?

OPTIONS:
- heat produced
- remains of prehistoric life
- layers of fat
- The area was once underwater
- the Great Barrier Reef
- the body's largest organ
- sedimentary rocks
- it keeps an organism warm

A: the Great Barrier Reef
You are presented with the quiz "Hormones tell what to produce eggs?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "most pituitary hormones control other endocrine glands" and "when the pituitary produces FSH and LH, the ovaries respond by producing eggs". So, what's the best answer to the question?
OPTIONS:
- heat
- seeds
- ovaries
- offspring
- pollen
- testicles
- liver
- vas deferens
ovaries