The two correct answers that best support the inference that honeybees—not bumblebees—are responsible for infecting the studied flowers are:
- All of the honeybees researchers collected were infected with both viruses.
- All the infected flowers researchers picked and tested were close to apiaries.
These statements indicate that honeybees, which were found to be infected, are more likely to infect the flowers when they are foraging close to their hives (apiaries).