Which substance would heat up the most during a sunny day, and why? Air, because it needs the most amount of energy to raise its temperature
Seawater, because it needs the least amount of energy to raise its temperature
Sand on the shore, because it has a relatively low specific heat
Fresh water, because it has high specific heat

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?