For flat surfaces, ____ target points or areas are required for a primary datum.

A) one
B) two
C) three
D) four

Target Points

Specific locations defined on a part or in a design intended to align, measure, or reference during manufacturing or assembly processes.

Primary Datum

A specific reference point, line, or surface used as a basis for dimensional control in design, manufacturing, and inspection processes.

Flat Surfaces

Flat surfaces refer to geometric planes that are smooth and even without curvatures or irregularities.