Which best describes an action appropriate to the drafting stage of writing a letter to the editor?
a. practice your telephone manners so you will be ready to call the editor
b. brainstorm about topics that interest you.
c. use evidence and words that will be most effective in persuading your audience.
d. properly address the envelope

Among the choices provided, the correct answer is:

 C. Use evidence and words that will be most effective in persuading your audience.

In writing a letter, you have to carefully choose the words that are persuasive and truthful so that the receiver will be engaged to react comprehensively. 

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).