To convert the discrete signal z(n) to a continuous signal z(t), one must determine whether to apply a Z transform or to interpolate the discrete data points. The discussion highlights the need for clarity on the method of conversion, as both approaches serve different purposes. Interpolation techniques, such as linear or spline interpolation, can be utilized to create a continuous representation from the sampled data. Alternatively, applying a Z transform can provide insights into the signal's frequency components. Understanding the specific requirements of the conversion process is essential for accurate results.