The correct option is D Xylem parenchyma
Tracheids, vessels, xylem fibres and xylem parenchyma are the structural constituents of xylem. Xylem tissue is made up of tracheary components, which are specialised water-conducting cells. The xylem is dead tissue since all of its components are dead except the xylem parenchyma. Water and nutrients are transported from the root to the stems and leaves via xylem. The supporting role of xylem is to provide strength to tissues and organs, as well as to maintain plant architecture and resistance to bending. Because it is the sole living portion of the xylem, the Xylem Parenchyma aids in food storage.