I'm pretty sure the answer is Pyroclastic flow
The answer is option D.Star X may be moving but its motion is not radial.
We know that
1) empirical formula of a compound is the representation of a molecules with the elements in simplest mole ratio.
2) the molar mass is the actual proportion of moles of elements present in a molecule
3) there is a simple ratio between the molar mass and empirical mass a molecule
Now let us solve each problem
1) empirical formula of
will be 
2) empirical formula of
will be 
3) empirical formula of
will be 
4) the molecular formula will be :

the molecular formula = 4 X empirical formula = 4 X CO = 
5) the mole ratio of Cl and Cr is 
empirical formula will be 
I think it's C yea it's C
Answer:
there is no "following". if you can attach an image for me, ill be glad to help.
Explanation:
have a good day,
~evita