The answer is <u>WRECK</u>.
As a noun, 'decay' is the state of gradual damage or decline in strength, soundness, or prosperity, that is to say, of becoming worse. Similar to the noun 'wreck' that is the state of being damaged, disabled, in ruin or dilapidation.
The other words do not support the meaning of 'decay', because 'colossal' refers to something extremely big, 'bare' is something/someone without any clothes or not covered by anything, and 'round' is something shaped like a ball or circle, or curved.
The 7 critical thinking habits of the mind include...
Open-minded, truth seeking, analytical, systematic, confident in reasoning, inquisitive, and judicious.
Samuel Gompers was famous because he was an American labor union leader and a key figure in American labor history.
He was a great man, very honorable, stuck to his word, and did what he promised even if it meant sacrifice.