Problem: Reed started studying protozoa and was more interested in the predatorial behaviors of protozoa, while Brad wanted to know more about other types of protozoa, suck as grazers and decomposers. Given the paragraph above, please answer correctly the following question: Which person learned more about protozoa that graze on algae?

A: Brad

Problem: Mike is studying the population growth rate of countries around the world. He noticed that countries like Japan and Russia are having a demographic shift. They have a growing population of late adulthood. He recorded the late adulthood population as population A. On the other hand, many developing countries have growing population of younger people. He recorded younger population as population B. Given the paragraph above, please answer correctly the following question: Which population would be less at risk of cancer or Alzheimer's disease, population A or population B?

A: population B

Problem: Jeremy is performing some chores around the kitchen when he decides to pour himself some water into a blue cup. However, this water isn't cold enough so he puts it into the freezer to cool it down. He then pours himself the exact same amount of water in a red cup, but gets a phone call and leaves that cup on the table without taking a sip. He comes back two hours later after the phone call to get his cups of water back. Given the paragraph above, please answer correctly the following question: Will the water in the red or blue cup have more volume?

A: blue

Problem: Steve and Chris sit down at a new cafe that just opened up in town after hearing rave reviews of it at work. They look at the menus trying to decide what to order when a waiter shows up and asks if they would like anything to drink. Steve says he would like a glass of water that has molecules far apart. Chris orders water with molecules closer together. The waiter looks at them with a rather confused look and asks them to please elaborate. Given the paragraph above, please answer correctly the following question: Whose cup of water is less dense?

A:
Steve