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the answer would be C. <em>Karl Marx. </em>
Answer: variables
Explanation:
A variable is either a qualitative or quantitative entity for example a number, age, sex, income, days, class grades, color, texture, shape and other. A variable can be changed or manipulated in an experiment to know its impact on the desired variable or the experimental variable.
A variable may vary among the members of the population for example height, weight, age, sex, intelligent quotient and other features. Such variation s can be useful in determination of the most prominent or least occurring traits in the survey research.
Explanation:
Brass is a metal alloy that is always made with a combination of copper and zinc. By varying the amount of copper and zinc, brass can be made harder or softer. Other metals—such as aluminum, lead, and arsenic—may be used as alloying agents to improve machinability and corrosion resistance.
Cognitive dissonance theory predicts that once a difficult choice between equally attractive alternatives is made, people experience: post decision regret.
The human emotional response of regret in psychology is frequently felt when making decisions under uncertainty; should information about the best course of action become available after making a fixed decision, this response can be quantified as the value of the difference between a made decision and the optimal decision.
According to the notion of regret aversion or expected regret, people who are faced with a decision may anticipate regret and hence factor this desire into their decision. Regret is a negative emotion that has a strong social and reputational component. It is essential to human psychology, experience-based learning, and risk aversion.
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