1. Palpable - is an intense feeling that is as good as being touched. It is an adjective because it is descriptive.
2. Impeccably- Because of the -ly suffix attached to the root word, impeccable, we can deduce that the word is an adverb that tells us how impeccable or without faults a certain thing is.
3. Deduction - This is a noun because it is the name of a process. Deduction is inference or subtraction as the case may be.
4. Exonerate - This is an act of absolving a person of a fault. A verb is an action word or a doing word.
I have never read a story called "The Long Journey Through the Wilderness" but I am an avid Bible reader and I study it throughly. The Biblical answer to your question is D. Hope this helps and if you have any other Bible questions, feel free to ask me! :)