Problem: Two neighboring countries implemented different sets of economic reforms. The reforms took over a decade to implement, but the effects were not similar at all. Redvania was more prosperous and it became much richer, while Blueland stagflated and the inhabitants were not pleased with the outcome. Which country had greater optimism after 10 years?

A: Redvania

Problem: The blood vessels of two different people are being studied at a laboratory. Jim's blood vessels are narrowing, and Bob's blood vessels are widening. This information alone doesn't tell the scientists much about Jim and Bob so they will need to run more tests to see if there are issues with the blood. Are Jim or Bob's muscular walls relaxing?

A: Bob's

Problem: Two brothers, Tom, aged 26, and Paul, aged 16, started weight-lifting to gain more muscle mass. Three years later they were 20-25 lbs. heavier. Which brother didn't have active growth cartilages?

A: Tom

Problem: Town A disposed of the biomedical waste from their hospital conventionally in a regular dump site for 10 years because it was more convenient, while town B took them to an ecological site where they wouldn't affect ground water and spread disease. Which town is experiencing less bad odor?

A:
town B