Q: John wanted to see how he would fare in high altitude compared to ground-level. So, he first measured his responses in ground-level. He labeled this part of the study as case A. Then he board on an airplane to reach high altitude, and measured his responses there. He labeled this part of the study as case B. Now, John knows how he needs to prepare for a high altitude hiking. Which case would see higher air density, case A or case B?
A: case A

Q: Mary and Ann are mother and daughter. Mary is in her 70's while Ann is in her late 40's. They both work out regularly for improved health. Mary has been experiencing some health issues lately. Which person has a stronger immune system?
A: Ann

Q: Michael and his brother John are making protein shakes. They are mixing different sizes of protein powder into the shakes to see if that impacts how the powder dissolves into the shake. Michael makes his shake using large individual pieces of protein powder, while John makes his shake using small individual pieces of powder. Whose shake will have more easily dissolved protein powder?
A: John

Q: Dan decided to preserve some fruit and roots to see how long they last before they spoil. He also bought other fruit that he plans to eat fresh. He candied plums, pears, ginger and quince, and he ate fresh apples, oranges and mango. Which fruit have a higher sugar content candied pears or fresh apples?
A:
candied pears