By repeating the phrase “are willing” three times, Roosevelt creates a tone of

I believe that one of your answer choices has to do with him being firm; unresolved, and wants to get his point across.  

Explanation:

Think of it as a parent talking to their child.  We may repeat it 3 times - we mean it.  We believe it and we want you to understand the firmness of our request.

1. c- the tunnel project was worthwhile.

2. b- to inform about the value of the tunnel project

i think the answer is invented words, rhyming knack, alliteration, and, metaphor.