Read the poem "A Jelly-Fish" by Marianne Moore. Then, answer the question that follows.
[1]Visible, invisible,
A fluctuating charm,
An amber-colored amethyst
Inhabits it; your arm
[5]Approaches, and
It opens and
It closes;
You have meant
To catch it,
[10]And it shrivels;
You abandon
Your intent—
It opens, and it
Closes and you
[15]Reach for it—
The blue
Surrounding it
Grows cloudy, and
It floats away
[20]From you.
Which poetic form does Moore use in her poem?
Ballad
Free Verse
Sonnet
Villanelle