Patwardhan et al. report data from a study where they hired experimental confederates to attend speed dating events, posing as daters, and carefully take notes on the behaviors of the daters. what type of research design did they use? a. case studyb. experimentc. naturalistic observationd. survey

The anwer is C. Naturalistic observation.

Explanation:

This approach involves observing subjects in a natural setting. It's mostly used when experimental lab recreations don't reflect the purpose of the study (i.e. humans might act differently when they are aware they're being the subjects of a research).

answer; size, shape, color and status;

that's a true information