Aresearcher is conducting an experiment in which one group of people is exposed to an advertisementand another group is exposed to another advertisement. he is examining the effect of headline font sizes on consumers’ attitude toward the brand advertised. the participants in this experimental re-search are referred to as:
a. respondents
b. elements
c. factorials
d. subjects

d. subjects

Explanation:

"Experimental research, often considered to be the “gold standard” in research designs, is one of the most rigorous of all research designs. In this design, one or more independent variables are manipulated by the researcher (as treatments), subjects are randomly assigned to different treatment levels (random assignment), and the results of the treatments on outcomes (dependent variables) are observed."

Reference: Pelz, Bill, and Herkimer County Community College. “Research Methods for the Social Sciences.” Lumen, 2019

answer; intellectual property protection;