The correct option is
C Vascular bundle
A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in vascular tissue, which exists in two forms, xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. Also, it is a vein in the leaf that contains conducting tissues.
The procambium is formed by smaller cells and longer than the ground meristem, gives rise to primary vascular tissue cells (primary xylem and primary phloem) and the pericycle. Thus, option C is correct.
Procambium does not produce epidermis or pith.