Which of the following topics is too narrow for an explanatory essay? how to make homemade bread. selecting a type of yeast to make homemade bread. methods of breadmaking from colonial america. using trial and error to find the best oven temperature to bake bread.

I believe it is "using trial and error to find the best oven temperature to bake bread" is the most narrow topic for an explanatory essay.

Since explanatory writing tends to deliver information, method of trial and error is not such a thing, it is the process of making repeated trials or tests, improving the methods used in the light of errors made, until the right result is found. (according to Collins dictionary)

in this text, paine use the word “ye” several times in order to  capture  the  attention of the colonists who   haven't understand the   importance and urgency of his cause. the word "ye" that is the plural of   "thou" is used to call the colonists attention and make the fight for the cause.

you need to explain that more, your grammer just needs to be close to perfect.