Which of the Following Examples Would NOT Be Considered an Unobtrusive

Multiple Choice

Which of the following examples would NOT be considered an unobtrusive measure? (circle all that apply)

A) measuring a person's galvanic skin response and pulse after seeing a scary movie (rather than have them fill out a survey)
B) using a pressure sensor underneath a clipboard to assess the amount of pressure respondents apply when completing a survey (as a measure of stress)
C) weighing the amount of trash in people's trash cans
D) counting the steps a person takes between two specified points