The best answer for this is A) I’m pretty sure it is
Ribosome would be considered a factory “worker” as they *produce* proteins!
Strontium Phosphate is made from that thing
Atomic mass iron ( Fe ) = 55.84 a.m.u
55.84 g ------------ 6.02x10²³ atoms
24.0 g ------------- ??
24.0 x ( 6.02x10²³) / 55.84
=> 2.58x10²³ atoms