The correct answer would be...
Yellow.
Yellow was liked more than green, but less than blue because it was the only other option as orange was less than green itself.
The correct answer is the last option: If you take away the suffix –n and the prefix un-, the root word is “know”.
Prefixes and suffixes are sets of letters that are added at the beginning (prefix) or end of a word (suffix). They are not words by themselves, but they do change the words' meanings or categories.
In this case, the root is know. The suffix -n is used to change the word's category from verb (know) to noun (known). While, the prefix un- is used to mean NOT. As a result the meaning of the word UNKOWN would be not known or familiar.
I would say "for people to continue the unfinished work of the soldiers"
No it’s a sentence :) good luck!