I think it’s ethos since the doctor is a credible sources due to them being an expert and doctor.
You can find the answer if you search this question on go ogle, it would be too difficult for me to copy paste but it literally comes up lol
Answer:
Angry.
Explanation:
The connotation that could best be determined for the boldfaced word i.e. "furious" would be 'angry' as the word furious implies the extreme anger or full of violence or intensity. The use of this word here, illustrates the intensity of the situation that filled the author with rage. Thus, the word in bold or bracketed letter exemplifies the enraged and fierce reaction of the Peter after witnessing, perhaps due to the speaker lying on his bed.
My sweet,quiet father surprised us with his outburst yesterday
Your only describing the father with 2 words. A comma is only necessary if you were using 3 words