Q: Doctors studied two groups of individuals: group O with people over 65, and group S with people under 65 years old. They published the results in a magazine. Which group had more people with decreased stamina?
A: group O

Q: A pharmaceutical company is trying to find the cure for allergy. To that end, they conducted an experiment with two groups of subjects, group A and group B. They exposed the participants in group A to allergen, but they didn't expose the participants in group B to any allergen. The symptoms of these two groups would help them find the cure for allergy. Which group might not have been exposed to dust mites, mold, or animal dander, group A or group B?
A: group B

Q: Michael has become bored with his passive life style, and has decided to take up weight lifting as a hobby. He begins to exercise with weights several times a week. Michael's brother, Robert, isn't as motivated as Michael though. Robert decides to continue being mostly inactive and only exercises with weights every couple of months. Who will increase the strength of their muscles more?
A: Michael

Q: Ben and Mike both studied earthquakes, while Mike was more interested specifically in mantle melting and related phenomena. Which person studied more about the three ways of mantle melting?
A:
Mike