Which of the following correctly arranges the planets by their orbital speeds? jupiter a.< earth < saturn < mercury b. mercury < saturn < earth < jupiter c. saturn < jupiter < mars < mercury d. mercury < mars < jupiter < saturn

Option C, Saturn < Jupiter < Mars < Mercury

Explanation:

The orbital speed of different planets given in question is as follows -

a)  Earth - 30 km/s

b)  Saturn - 9.68 km/s

c) Mercury - 47.36 km/s

d) Jupiter - 13.07 km/s

e) Mars - 24 km/s.

On arranging the given planets in order of increasing orbital speed we get the following -

Saturn < Jupiter < Mars < Earth < Mercury

Thus, option C is correct.

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