What effect does the repetition of the word "and” have on this stanza?

It emphasizes that a quiet hill is much more desirable than a droning bee.
It highlights the poet’s desire to seek a quiet hill with a cotton tree.
It stresses the images of the crystal rill, the droning bee, and the cottage, but not the ferns.
It connects and gives equal importance to all of the ideas and images in the stanza.