Six-year-old Blair liked the first grade right up until her teacher, Ms. Havemayer, took maternity leave. The substitute teacher, old Ms. Snarly, was strict and scolded Blair on several occasions, making her cry. On one Saturday morning as Blair was helping her father with grocery shopping, she suddenly came face to face with old Ms. Snarly. Blair instantly burst into tears. For Blair, Ms. Snarly in the grocery store is an example of a(n):

"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?