Based on the article excerpt provided, the two correct answers that support the inference that people have been more concerned with the health of honeybees than wild bumblebees in recent years are:
- People are more familiar with honeybee die-offs.
- The causes of bumblebee die-offs have been largely understudied.
These choices indicate a greater focus on the issues surrounding honeybee populations while suggesting that the challenges faced by wild bumblebees have not received the same level of attention.