When gamma radiation is released by an atom,. a) it is the only radiation emitted. b) it only ever accompanies beta radiation. c) it only ever accompanies alpha radiation. d) it usually accompanies beta or alpha radiation..

D) it usually accompanies beta or alpha radiation..

Explanation:-

Gamma decay : In this process, the unstable nuclei transformed into stable nuclei by releasing gamma rays along with beta or alpha decay. It is observed when a nucleus is formed in an excited state and then decays to its ground state by emitting an electromagnetic radiation.

General representation of an element is given as:  

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

General representation of gamma decay :

like poles repel so keep pushing north to north and repels funny to see this