If you have 55 grams of different substances, the least dense substance would have which volume?
a. 10m3
b. 1m3
c. 100m3
d. 0.10m3

We know, density is indirectly proportional to volume, so object with largest volume will have the lowest density, here object with 100 m3 have largest volume so, it has lowest density

In short, Your Answer would be Option C

Hope this helps!