Scot has a 50 g sample of sandstone. the sandstone is formed by sedimentation, compaction, and cementation of 50-g of sand particles. based on this information, what can scot conclude?
a) mass is conserved in the rock cycle.
b) the structure of sand remains the same.
c) the sand retains its properties within sandstone
d) the volume of the parts is conserved in the rock cycle.

THE ANSWER IS A I GOT IT ON USATESTPREP

girl imma just put my comment here because i need a couple point okurrttt

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.