Question

an occlusive dressing may be made from--
○ dirty rag.
○ clean plastic wrap.
○ clean cloth.
○ clean gauze soaked in water.

Explanation:

An occlusive dressing needs to create a seal. A dirty rag is unsanitary. A clean cloth and clean gauze soaked in water do not create an air - tight seal. Clean plastic wrap can create an occlusive (air - tight) seal over a wound.

Answer:

Clean plastic wrap.