In the rock cycle, which rock type may be weathered to become sediment, and eventually sedimentary rock? I. Igneous Rock
II. Sedimentary Rock
III. Metamorphic Rock

I and II only

I and III only

II and III only

I, II, and III

d (I think)

Explanation:

the rock cycle is a very slow, but natural process, and it may skip a stage (for example, metamorphic rocks might skip the igneous stage and weather right to sedimentary) if this is incorrect, I apologize

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.