(A) Unity of Command: This principle states that an employee should receive orders from only one superior. It is related to the principle of directing and is an essential aspect of maintaining a clear chain of command.

(B) Maximum Individual Contribution: This is related to directing as it involves motivating and guiding individuals to contribute their best to the organization.

(C) Use of Formal Organisation: This is related to organizing, not directing. It pertains to the structure and design of the organization.

(D) Follow Through: This is related to directing as it involves ensuring that plans and instructions are implemented and followed through.

(E) Leadership: Leadership is closely related to directing. Effective leadership is an important part of the directing process, as leaders guide and motivate employees.

Based on the analysis, the option (4) (C) only is the correct answer, as the "Use of Formal Organisation" is not directly related to the principle of directing.