Problem: Two agricultural students had to prepare for exams. Jane had the entomology exam, so she studied about insects. Nora had the chemistry exam, so she studied about alkanes. Which student learned less about silkworms?

A: Nora

Problem: two countries of similar natural resources had different populations. Italy had a small population, while Spain had a very large population. Which country had a better reproductive rate?

A: Italy

Problem: John works as a mechanical engineer in the auto industry. He is testing three surfaces, surface A, surface B, and surface C for their usability. Surface A has a gentler slope, surface B has a steeper slope, and surface C doesn't have any sloping. He needs to figure out advantages and disadvantages of each slope. Would surface A need less or more input force to move an object upward?

A: less

Problem: Two different types of animals live in the same habitat but have vastly different behaviors. Animals A and B are both the same size which is relatively small. Animal A lives in small groups of 4 or 5. Animal B however lives in very large groups and when they move around they all move at the same time. Both groups are also hunted by the same predator. Which group likely relies on confusing potential predators, group A or B?

A:
B