The purpose of the preamble of the constitution is to a. establish and maintain the sovereignty of individual states. b. describe and enforce the powers of the confederation government. c. introduce and explain the core ideas of the government’s important principles. d. define and distinguish the roles of domestic and foreign policies.

"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?