The Harlem Renaissance:
a. describes the quest by writers like Claude McKay to locate the roots of the black experience.
b. marked a turning point in race relations in America.
c. has often been compared to 21st century "gentrification" efforts in the urban Northeast.
d. was a phrase coined by Winston Churchill.

"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?