Question

the ocean, a sea slug, contains the blue dragon nudibranch, which steals stinging cells from its prey. please choose from one of the following options. ocean contains the blue dragon nudibranch, a sea slug which steals stinging cells from its prey. no change ocean, which steals stinging cells from its prey, contains the blue dragon nudibranch, a sea slug. ocean contains the blue dragon nudibranch, which steals stinging cells, a sea slug, from its prey.

Explanation:

The original sentence has a misplaced modifier. The phrase "a sea slug" should modify "the blue dragon nudibranch" to clearly indicate what the blue dragon nudibranch is. The first option correctly places "a sea slug" next to "the blue dragon nudibranch" and keeps the description of stealing stinging cells from its prey attached to the sea slug (the blue dragon nudibranch).

Answer:

ocean contains the blue dragon nudibranch, a sea slug which steals stinging cells from its prey.