Problem: There are two neighboring cities, Brampton and Filtroy. The two towns depend on each other by trading supplies and goods regularly. Filtroy is located on top of a very tall mountain, and Brampton is situated at the base of this hill. For this reason, it can sometimes be difficult to traverse the roads to trade goods, but it's important to do it so both cities can thrive. Which city has lower air pressure?

A: Filtroy

Problem: John is a nuclear scientist who works at the Fermi lab. Today, in front of him he has four samples, sample A, sample B, sample C, and sample D. Sample A is the naturally occurring uranium. Sample B is enriched uranium. Sample C is the U-238, and sample D is the U-235. He needs to figure out how to best use them. Which smaple would not be fissionable, sample C or sample D?

A: sample C

Problem: Two college groups did a one year experiment on each other. One group called Group Alpha spend more time and worked together. Group Beta let it's members study on their own and be less dependent on the group. Group Alpha had better results. Which group experienced more drive towards their work?

A: Alpha

Problem: Rob is competing in a cross country race. After running about a mile he reached a place with two signs, sign A and sign B. Sign A says that it's a quicksand. But sign B says that it's not a quicksand. He has to decide which way to go. In which way Rob would most probably sink, sign A or sign B?

A:
sign A