The nurse observes that an area in the mouth of a child with leukemia is bleeding. Which of the following items should the nurse use to promote homeostasis over the lesion? 1. Karaya gum. 2. A cotton...

The nurse observes that an area in the mouth of a child with leukemia is bleeding. Which of the following items should the nurse use to promote homeostasis over the lesion?

1. Karaya gum.

2. A cotton ball imbedded with petroleum jelly.

3. A nonsticking gauze sponge.

4. A dry tea bag.