I believe it is C. Hrothgar.
This is the technique of using your opponents young age to say that he is not qualified.
I listened to grandpa, mom talking to dad, giving dad advice and the baby banging his block, over and over on the ground.
<span>McCourt is using allusion</span>
Alright, so amongst starters, you have a few you can use to show you'll have evidence:
According to text
According to the passage
According to the information provided
As the information shows
As the text mentioned, (include direct quote here)
Based on the information in the passage/text, (include reasoning here)
Etc. There are quite a few options, really, these are just a few. Based on whatever you are providing the information ON, the words information, text, and passage can be changed to suit your needs, such as article, newspaper, website, etc.