1.

 Once a bird is brought to a rehabilitation center, basic procedures are followed. First, the bird is sedated, if necessary, and examined to detect broken bones, cuts or other injuries. Next, oil is flushed from its eyes and intestines. Heavily oiled birds are then wiped with adsorbent cloths to remove patches of oil. Stomach -coating medicines may be administered orally to prevent additional absorption of oil inside the bird's stomach. The bird is then warmed and placed in a quiet area. Finally, Curtains are often hung around the area to limit the bird's contact with people. 

The passage is about :

• A. The preservation of aquatic creatures from water pollution.
• B. The preservation of aquatic creatures from water pollution.
• C. The preservation of aquatic creatures from water pollution.
• D. The preservation of aquatic creatures from water pollution.

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