Researchers in E-Commerce Design an Experiment to Determine What Factors

Researchers in e-commerce design an experiment to determine what factors are most
Important to online consumers when completing a transaction via the Internet.Individuals
Perform tasks on a set of Web sites and record their impressions about various attributes.
Which of the following would best describe the cases?

A) Participants
B) Respondents
C) Experimental Units
D) Identifiers
E) Variables