Target fibres are characteristically seen in a muscle biopsy of -
Target fibers

During denervation atrophy there is a cytoskeletal reorganization of some muscle cells, which results in a rounded zone of disorganized filaments in the centre of the fiber (target fiber).
Amongst the given options only motor neuron disease can result in denervation of the muscle.
Dermatomyositis
Motor neuron disease
Myasthenia gravis
Drug induced myopathy