"my own line of reasoning is to myself as straight and clear as a ray of light." paine most likely uses this language to convince his audience that:

Paine wanted to convince listeners of his confidence in the information in his speech.

Explanation:

Paine was convinced of his ideas; He believed that his line of reasoning is correct and should be considered by everyone. For this, Paine decided to tell his ideas with confidence, so that he could convey to the public the feeling of conviction in all the words he speaks, for this reason, Paine used the statement:  "My own line of reasoning is to myself as straight and clear as a ray of light."

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .