Problem: David is an entomologist. He recently got interested in ants and their behaviors. To that end, he studied a group of ants, which be labeled as case A. To compare ants with other ant like creatures he studied another hymenopteran group, which he labeled as case B. Moreover, he noticed two distinct trails made by the ants, trail A or trail B. Trail A was followed by many ants, but trail B was abandoned by them. Given the paragraph above, please answer correctly the following question: Which trail would more likely be longer, trail A or trail B?

A: trail B

Problem: Two groups of soldiers started different training programs. Blue group did weight training for 3 months, while Brown group ran 3 miles a day for three months. The Captain observed different results on each group. Given the paragraph above, please answer correctly the following question: Which group increased the strength of their muscles?

A: Blue

Problem: Students studied two groups of organisms. Group A composed of organisms that reproduce sexually, and group B composed of organisms that reproduce asexually. They were fascinated by their discoveries. Given the paragraph above, please answer correctly the following question: Which group of organisms has individuals that are an exact copy of the parent?

A: group B

Problem: A group of researches studied the green house gas emissions and their effects on Earth and people during the eighties compared to the twenties. Given the paragraph above, please answer correctly the following question: During which decade did Earth experience a more prevalent heating effect because of green house gas emissions?

A:
eighties