TASK DEFINITION: You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.
PROBLEM: Paragraph- Sent 1: Breathing is the process of moving air into and out of the lungs.
Sent 2: The process depends on a muscle called the diaphragm.
Sent 3: This is a large, sheet-like muscle below the lungs.
Sent 4: Inhaling, or breathing in, occurs when the diaphragm muscle tightens.
Sent 5: This increases the size of the chest.
Sent 6: This too decreases air pressure inside the lungs.
Sent 7: This action allows air and gases to enter the lungs.
Sent 8: Exhaling, or breathing out, occurs when the diaphragm muscle relaxes.
Sent 9: This decreases the size of the chest.
Sent 10: This increases air pressure inside the lungs.
Sent 11: This action allows for air to leave the lungs.
Sent 12: When you inhale, air enters the respiratory system through your nose and ends up in your lungs, where gas exchange with the blood takes place.
Sent 13: What happens to the air along the way?
Sent 14: In the nose, mucus and hairs trap any dust or other particles in the air.
Sent 15: The air is also warmed and moistened.
Sent 16: Next, air passes through a passageway that is connected to the windpipe.
Sent 17: The air then finds its way to the lungs.
Sent 18: In the chest, the windpipe splits so that air enters both the right and left lung.
Question: What is the muscle called that tightens and relaxes, allowing you to breathe? (A) Chest (B) Diaphragm (C) Biceps.

SOLUTION: B.

PROBLEM: Paragraph- Sent 1: The digestive system is the body system that digests food.
Sent 2: It digest food in two ways, mechanically and chemically.
Sent 3: Both help in the process of turning food into nutrients.
Sent 4: The digestive system also eliminates solid food waste.
Sent 5: The major organs of the digestive system include the mouth, esophagus, stomach, and small and large in- testines.
Sent 6: These organs all work together to help you gain energy from the food you eat.
Sent 7: Digestion starts in the mouth.
Sent 8: When food is swallowed, it travels through the esophagus to the stomach.
Sent 9: In the stomach, digestion continues and a small amount of absorption of nutrients takes place.
Sent 10: Most chemical digestion and nearly all absorption of nutrients take place in the small intestine.
Sent 11: This organ consists of three parts: duodenum, jejunum, and ileum.
Sent 12: The large intestine is the last stop in the digestive system.
Sent 13: This is where water is absorbed.
Sent 14: The food not digested is released as waste.
Question: Why is the digestive system important? (A) It helps regulate your waste (B) Absorbs waste (C) Organs all work together to help you gain energy from the food you eat (D) Helps you gain energy from the food you eat (E) Duodenum absorbs water (F) It turns food to nutrients (G) It digest food in two ways, mechanically and chemically. Both help in the process of turning food into nutrients, eliminates solid food waste (H) It makes you feel alive (I) It keeps you warm.

SOLUTION: C, D, F, G.

PROBLEM: Paragraph- Sent 1: Flowing water causes sediment to move.
Sent 2: Flowing water can erode both rocks and soil.
Sent 3: You have already learned that materials can dissolve in water.
Sent 4: With enough time, even rocks can be dissolved by water.
Sent 5: This process happens really slowly.
Sent 6: It may take over a million years to dissolve a rock.
Sent 7: It doesnt matter how big the rock is.
Sent 8: With enough time, flowing water can dissolve it.
Sent 9: Moving water also has the ability to move small pieces of rock and soil.
Sent 10: How can water move a rock?
Sent 11: Doesnt it need energy?
Sent 12: Of course, water gets its energy because it is moving.
Sent 13: Moving water has kinetic energy.
Sent 14: Things that have more energy can do more work.
Sent 15: When water stops moving it will have no energy.
Sent 16: It will no longer be able to move the rock and soil.
Sent 17: When this happens the rock and soil will settle to the bottom of the calm water.
Sent 18: Scientists call this process deposition.
Question: What is it called when rock and soil settle to the bottom of calm water? (A) Deposition (B) Loss energy (C) kinetic energy (D) Process deposition.

SOLUTION:
A, D.