<prompt> Oxidative phase of HMP shunt pathway is least active inAdrenal coexLactating mammary glandRBCSkeletal muscle  <response>: Oxidative phase of HMP shunt pathway is least active in skeletal muscle High activity of HMP shunt Low activity of HMP shunt Liver Non-lactating mammary gland Adipose tissue Skeletal muscle Adrenal coex, Thyroid Erythrocytes Testis Lactating mammary gland NOTE: Oxidative phase of HMP shunt cannot occur in kidneys. 