Written Consent Would Not Be Required in Any of the Following

Written consent would not be required in any of the following situations with the EXCEPTION of:

A) An observational study that measures walking speed of people entering and exiting buildings
B) An anonymous study that measures the relationship between time spent grocery shopping and money spent on groceries
C) A confidential study examining income level and voting behavior
D) An anonymous survey asking whether students want the campus mascot to be changed