Which one of the following species-species interactions is MOST likely to be mutually beneficial?

Question

Quizplus · Accepted Answer

Honeybees and apple flowers have a mutualistic relationship where the bees collect nectar and pollen from the flowers while pollinating them in the process, which leads to increased fruit production for the apple tree. The other options listed are not necessarily mutually beneficial, as humans may harm yeast during the process of using them for fermentation, leaf-cutter ants may harm the plant they are feeding on, and two plant species may compete for resources rather than mutually benefit from sharing them.

Which One of the Following Species-Species Interactions Is MOST Likely