Final answer:
Most people understand proportional relationships expressed as percentages. Percentages are essentially fractions with a denominator of 100, allowing for a clear and simple expression of parts of a whole.
Step-by-step explanation:
Percentages are widely used in various fields to express proportional relationships in a way that is intuitive and easy to understand for most people. The correct answer to the question, “Percentages are widely used in education, psychology, and the popular media, and most people understand proportional relationships expressed as what?” is d. Percentages. When dealing with proportion problems, we often look at categorical data that can be labeled as Success/Failure or Yes/No. To calculate a percentage, you divide the part by the total and then multiply by 100. For example, if 70 out of 100 students pass a test, then the passing proportion is 70%.