Problem: Two teams were competing in a 5 km race. White team warmed up before the race, but Blue team arrived with a bus late and didn't have time to warm up properly before the race. Which team had more athletes with increased blood flow to the muscles before the race?

A: White

Problem: Two friends, John and Abe, worked at the same warehouse. John was exposed to very strong light all the time, while Abe worked in a more normal environment. John started experiencing health problems after a while. Which worker was influenced less by improper spectral composition, John or Abe?

A: Abe

Problem: Two sisters Mary and Beth were into sciences. Beth studied physics, while Mary studied chemistry and especially alkanes. They were very devoted to studying. Which sister studied less about the melting points of alkanes?

A: Beth

Problem: Two high school buddies, Dan and Bob, had very different lifestyles 30 years later. Dan made only healthy lifestyle choices, was vegan. Bob ate meat, cheese and didn't care about his health and didn't protect himself. Which man did not prevent cancer by making healthy lifestyle choices?

A:
Bob