Complex tissues are made of more than one type of cells.
All these cells coordinate to perform a common function.
Xylem and phloem are examples of such complex tissues. They are both conducting tissues and constitute a vascular bundle.
Xylem is the specialized tissue of vascular plants that transports water and nutrients from the plant root to stems and leaves. Hence option 4 is correct.
It also provides mechanical support and storage to the plant.
The water‐conducting function of xylem is one of the major distinguishing features of vascular plants.