What it’s one example of telling detail from “witness to the tragedy”

The answer to your question is  C. A pregnant cat swimming for her life .

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One example of telling detail from “witness to the tragedy” is A pregnant cat swimming for her life

Explanation:

A Telling Detail is a small description something just a few words that help the writer to give a clearer and more rounded image of a character o a scene. In the article about the tragedy of Hurricane Katrina in the line " I saw people wading chest-deep down Canal Street, along with a pregnant cat swimming for her life."  the image of the pregnant cat fighting for her life extended the tragedy to every kind of being.

on my last

the simple predicate of the sentence is camped.