Question

Which sentence contains an error in hyphenation?

Strong bonds were formed between the adventurers during the two-year rush to the Yukon.
It was an unheard-of occurrence to leave civilization without a compass so it rarely happened.
The rules involving how to conduct business during the gold rush were not clearly-written.
Every person in the exploration party had three much-needed items, including water.

Answer 1

the last sentence

Step-by-step explanation:

the hyphen is not necessary after the much.

and it's a grammatical error