The pharmaceutical company prefers experimental studies over surveys or observational studies mainly because:
1. Experimental studies provide more accurate results compared to observational studies and surveys. In experimental studies, researchers can control variables and conditions, leading to more precise outcomes.
2. Observational studies and surveys tend to be more time-consuming than experimental methods. Conducting surveys or observing subjects in their natural environment can take longer and may not always yield conclusive results.
In summary, the pharmaceutical company's preference for experimental studies is based on the higher accuracy and efficiency they offer compared to surveys and observational studies.