While participating in a psychological study you listen to different tones and tell the researcher when you can hear them, most likely to researcher is studying.. a.) top-down processing b.)gustation c.)absolute threshold or d.) subliminal perception

The researcher is most likely studying C. absolute threshold.

Explanation:

Threshold refers a specific intensity which needs to be exceeded in order to obtain a certain reaction. For example, pain threshold.

The absolute threshold refers to the smallest change in a stimulus' intensity in order to be identified by the senses, such as hearing, vision, etc.

In this case, a change in tones requires a low intensity, meaning an almost subtle change can be easily identified by the human sense. It is most likely the researcher is studying your absolute threshold.  

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.

the consumer demand because the members have to be aware if people are going to buy what they want to sell in this case either energy drinks or a car wash.