Which of these is the best reason why plotting a third point when using intercepts can help detect plotting or algebra mistakes?

Plotting a third point is the only way to determine if a line passes through the origin.

A third point is required to calculate the slope-intercept form of a linear equation.

Any two points will always form a straight line, but a third point will only align if all three are mathematically consistent.

A third point allows you to calculate the area under the curve more accurately.