Correct Answer: GOLDEN

Solution : Given:
KNOWLEDGE

Now, let's compare all the option words with the word KNOWLEDGE –
First option: KNOWN; All the letters of KNOWN are not present in the word KNOWLEDGE. In KNOWN two N are present but in KNOWLEDGE only one N is present.
Second option: GODOWN; All the letters of GODOWN are not present in the word KNOWLEDGE. In GODOWN two O are present but in KNOWLEDGE only one O is present.
Third option: WONDER; All the letters of WONDER are not present in the word KNOWLEDGE. R is not present in KNOWLEDGE.
Fourth option: GOLDEN; All the letters of GOLDEN are present in the word KNOWLEDGE.

So, the word GOLDEN can be formed using the word KNOWLEDGE. Hence, the fourth option is correct.