What part of the email needs revision?

the body
the subject line
the salutation
the signature

What is a predic. how did the great railroad strike of 1877 demonstrate the power of workers? ate noun?

Why is reasoning relivant to reading and evaluate text?

London includes a quote about john thornton as he is observing hal attempt to motivate the exhausted dogs "it was idle, he knew, to get between a fool and his folly". if the word "idle" is defined as "of no real worth, importance, or significance", what does this statement mean with regard to hal? who is the fool? what is hal's folly? why would john thornton think it of no real worth or useless to intervene?