Question

A:A plane is an undefined term because it
can be named using three noncollinear points

B: is described generally, not using a formal definition

C:is where other geometric shapes can be constructed

D:is a flat surface that extends indefinitely in all directions

Answer 1

Plane, point, and line are the three undefined terms of Geometry. If plane is undefined, then it has no formal definition. (Those last two words are a strong hint as to which objective is correct.) @bigbadboyfrank

Answer 2

B?

Answer 3

Correct, that is what I got.