Depending on what ur topic is,u need a few reasons why u think that is a good claim because that will be evidence that helps support ur claim.
It should be C the others really don’t make any sense
For when you have to write a letter, or make an advertisement.
This is a compound sentence because you can break it into two sentences.
Hope this helps
The saying
"men are like steel, when they lose their temper they lose their worth?" means that a man in a rage has lost a valuable property (the ability to keep a cool head) just like steel looking it's valuable property (it's tempering) when it gets re-heated.
The expression tell men that they should not lose their "temper".