Concept:Bees are natural pollinators that help plants reproduce and increase crop yield.
Explanation:Bees visit flowers to collect nectar and pollen as food.
While moving from flower to flower, pollen grains stick to their bodies.
These pollen grains are then transferred to the stigma of other flowers.
This transfer of pollen is called pollination.
Pollination leads to fertilisation, which forms fruits and seeds.
Thus, bees help farmers by improving crop production.
Answer:B. pollinate flowers