Is it important to know a writers motivation for writing a particular piece

In 150 words, describe what arthur would say to the captain in response to his questions in twelve years a slave. writer next question ask for turn it in

How does the author create a surprise ending? cite evidence from the text to support your answer.

Dogs make wonderful pets because they keep us happy and healthy, the topic sentence is "dogs make wonderful pets". can someone me write a unrelated sentences to the topic and can be eliminated. need asap