The variable is the group that was given caffine, because thats what the doctors manipulated. They possibly altered the natural memory of the participants by giving them caffine. A more specific variable could be how much caffine each participant is given and what time are they given it.
Answer:
b.believes that travel is most enjoyable when it involves little advance planning
Explanation:
Sana nakatulong
Answer:
pag-uusap sa pagitan ng dalawa o higit pang mga tao bilang tampok ng isang libro, dula, o pelikula
Explanation: