Question

parts of the flower
what is the sepal responsible for?
enclosing and protecting the developing flowers
capturing the pollen
attracting pollinators to the flower

Explanation:

Sepals are the out - most parts of a flower bud. Their main function is to enclose and protect the developing flower before it blooms. They are not responsible for capturing pollen (stigma does that) or attracting pollinators (petals often do that).

Answer:

enclosing and protecting the developing flowers