The response that best supports the analysis that there is a relationship between bumblebee infections and their proximity to honeybee apiaries is:
the percentage of bumblebees infected based on their proximity to apiaries.
This statement directly ties the bumblebee infection rates to their locations relative to apiaries, providing evidence of a correlation. The other options mention flower infections or general aspects of the study without explicitly correlating bumblebee infections to their proximity to honeybee apiaries.