Oh this is a hard one because, it technically has a subject and a verb (subject=he and himself verb=agreed); however it doesn't show a completed thought. I would say it's a sentence fragment, because it does not complete the thought.
Answer: Sentence fragment (this is what I would answer, because while it has a subject and verb it doesn't finish the thought.)
Answer: This could be all the above...
Explanation: Ethos or the ethical appeal, means to convince an audience of the author's credibility or character. Pathos or the emotional appeal, means to persuade an audience by appealing to their emotions. ... Logos or the appeal to logic, means to convince an audience by use of logic or reason.
There are quite a few English words that contain letters that are not suppose to be said including: debt and write. These left out letters can often tell us about the history and origin of the word and some places in the world has these which can tell us about who lived there at the time. This is called etymology.
Hope that this answer helped. ☺
