Explanation:
the science concerned with the study of inanimate objects including physics,chemistry and related subjects
If water had no density - if its mass per unit volume were zero - it would be massless, and would travel at the speed of light.
The oceans would all go in all directions (leaving sea-dwelling flora and fauna behind - and all the salt).
You wouldn't see rain coming (at least, not directly at you), because the image of the rain would travel no faster than the rain itself.
<span>And water pistols would essentially be laser guns.</span>
The day before or the day after.
Though most of these are correct, I personally think that 'g' is the best answer.