Can you maybe provide more detail?
I think a memo is a pronoun
https://teachfieldsteach.weebly.com/uploads/2/2/3/6/22363588/immigrant_contribution_by_jfk.pdf
Answer:
A. The defense lawyer concluded his remarks with a foolproof argument of the defendant's innocence.
Explanation:
That is the only one of the sentence choices that does not involve a material thing that would have the opportunity for human error. The first definition fits the other 3 better.
90% confident in this answer
