Which part of the flower attracts insects for pollination?

The correct option is B) Petals.

Flower part attracting insects for pollination:

1. Corolla consists of petals which are the coloured part of the flower and attract the insects for pollination.
2. The petals of a flower gives it unique shape, colour, and smell.
3. They protect the inner whorls of the plant and also help in pollination.
4. In addition to insects, in the plants that use wind pollination, the corolla assists this process by having small petals as well.