If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity, and theme deals with the sinking of the Titanic. Given these facts, what was more dense than fluid among the following options:
- aqueous solution
 - barrel-shaped
 - swamp vegetation
 - the Titanic
 - sea urchins
 - water vapor
 - layers of fat
 - Sand dollars


 

    the Titanic     