Besides pollination, what is another significant role of bees mentioned in the passage?

Bees are flying insects known for their role in pollination and for producing honey and beeswax. They are a monophyletic lineage within the superfamily Apoidea, presently considered a clade of the Anthophila. There are nearly 20,000 known species of bees in seven recognized biological families.

Besides pollination, what is another significant role of bees mentioned in the passage?

1. A.Producing silk
2. B.Controlling pest populations
3. C.Producing honey
4. D.Decomposing organic matter