Not only did i serve in the army, but in the navy for a short while too. 1.i also served 2.i will also serve 3.also i was served 4.have also been served

The answer that most appropriately completes the line of thought is 1. I also served. It parallels the sentiment of the first half of the sentence perfectly. However, if the answers could be disregarded, it would have been better to remove the “also” in all of them because it is rather redundant with the “too” already located at the end of the sentence.

the rhetoric device being used to persuade the audience is pathos.

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.