Which option is an example of quantitative data?

Quantitative data refers to numerical information that can be measured or counted, allowing for statistical analysis. In this case, shoe sizes represent a clear example of quantitative data because they are expressed numerically (for instance, size 8, size 10) and can be used for calculations like averages or ranges.

When considering the other options, gender consists of categorical descriptions without a numerical value, responses to survey questions may be qualitative, depending on their nature, and colors of cars are also categorical by nature, representing categories rather than measurable quantities. Therefore, shoe sizes stand out as the only choice that provides a numerical framework suitable for quantitative analysis.