The densities of the Jovian planets are
A. not more than about 0.5 times the density of water.
B. not more than about 1.5 times the density of water.
C. from 3.9 to 5.5 times the density of water.
D. more than 5.5 times the density of water.
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To determine the correct answer, we need to compare the densities of the Jovian planets (Jupiter, Saturn, Uranus, and Neptune) to the density of water.
To find the density of an object, we can use the formula: density = mass/volume.
Unfortunately, we do not have the exact mass and volume of the Jovian planets, so we'll have to rely on their average density.
Jupiter has an average density of about 1.33 times the density of water.
Saturn has an average density of about 0.69 times the density of water.
Uranus has an average density of about 1.27 times the density of water.
Neptune has an average density of about 1.64 times the density of water.
Based on these values, we can see that the densities of the Jovian planets are not more than about 1.5 times the density of water.
Therefore, the correct answer is B. not more than about 1.5 times the density of water.