In Cartesian coordinates, which order correctly represents a point as (X, Y, Z)?

• A. X, Z, Y
• B. Y, X, Z
• C. X, Y, Z
• D. Z, X, Y

Answer: (C)

The order is X, then Y, then Z, because each coordinate corresponds to a different axis in 3D space. The first value specifies horizontal position along the X-axis, the second specifies vertical position along the Y-axis, and the third specifies depth along the Z-axis. This sequence—X, Y, Z—lets you pinpoint a location by describing where it sits left-right, up-down, and in-out. Writing a point as (X, Y, Z) matches that convention, whereas swapping any of these would mix up which dimension you’re describing.