The evidence from the text that best supports the analysis that human-raised honeybees may be responsible for harming wild bumblebee populations is:
"Filling in one piece of the puzzle, the study revealed wild bumblebees pick up more viruses the closer they forage to managed honeybee colonies."
This statement indicates a direct connection between the presence of managed honeybee colonies and the increased virus exposure in wild bumblebees, suggesting that human interventions with honeybee populations can have negative effects on wild bumblebee health.