Ghosts are all around us. 1st and 4th option is an opinion and the third is a fact so ghosts are all around us would be a scientific statement.. i think im right..i hope i have helped..
-- pizza -- "best" can't be measured
-- brown -- "ugly" can't be measured
So neither of these can be studied, and neither of the statements could be the result of a previous scientific study.
-- ghosts -- there has never been a single verifiable observation to support this statement.
So "ants" is the only statement left. It's supported by hundreds of years of observations, and can be observed by anyone who's interested
