C I believe I think most likely
Answer:
Sorry, do not know need more information.
Explanation:
Kennedy claims in this excerpt is that basically nothing is impossible. The things that are considered extremely difficult to reach are possible if you are willing to do them. The capability or the limits of a person are only established by him or herself.
Singular
I will be preparing
You will be preparing
He/she/it will be preparing Plural
We will be preparing
You will be preparing
They will be preparing