Final answer:
An alpha particle is released by Fr-220 during alpha decay, resulting in the formation of a new element with a lower atomic number and mass.
Step-by-step explanation:
The alpha particle is released by Fr-220 during the process of alpha (α) decay. Throughout this decay process, the particle, which essentially is a helium nucleus, is emitted from the nucleus of an atom, and thus, Fr-220 (francium-220) would release an alpha particle to become a different element with an atomic number that is two less and a mass number that is four less than Fr-220. This particle carries a 2+ charge and is emitted from the nucleus of an atom, resulting in a new atom with an atomic number two less than the original and an atomic weight that is four less. Therefore, the correct option is a) Released.