Which research question is best answered with a quantitative design?

The research question that is best answered with a quantitative design is the one that focuses on measuring the impact of an intervention over a specific period, such as in the case of chair alarms and fall rates. Quantitative research is characterized by its ability to collect numerical data that can be subjected to statistical analysis.

In this question, the focus is on the relationship between the use of chair alarms and the incidence of falls, which can be quantified and analyzed statistically. Researchers could use methods such as randomized controlled trials or longitudinal studies to objectively measure the rate of falls before and after the implementation of chair alarms, allowing them to draw conclusions about causality and the effectiveness of the intervention.

In contrast, the other questions pertain to experiences, perceptions, and obstacles faced by individuals—areas where qualitative research methods would be more appropriate. These types of questions seek to explore complex human experiences and context rather than to measure numerical outcomes, making them unsuitable for quantitative approaches.