C. Quincunx or Diagonal system 1. 2.

Answer:
Quincunx:
The quincunx system has been developed to utilize the space between four trees that remains unutilized in the square system.
Diagonal System:
In association football, the diagonal system of control is the method referees and assistant referees use to position themselves in one of the four quadrants of the pitch. The diagonal is a common measurement of display size.