Which of the following is an example of a quantitative method?

A survey with numerical ratings is an example of a quantitative method because it involves collecting data that can be quantified and statistically analyzed. In quantitative research, numerical data is essential for measuring variables, comparing groups, and drawing conclusions based on statistical analysis. Surveys that utilize numerical ratings allow researchers to capture the intensity of attitudes or opinions through scales (such as 1 to 5 or 1 to 10), enabling them to perform calculations like averages and percentages.

In contrast, observational studies are generally qualitative as they focus on behaviors or phenomena without quantifying them in a numerical way. Content analysis usually involves examining documents or media for themes or patterns without necessarily converting them into numerical formats. Similarly, focus group interviews collect qualitative data based on discussions and personal insights rather than numerical measurements. Therefore, the aspect of numerical data collection and analysis in surveys distinctly characterizes option B as a quantitative method.