Question

after clicking the sketch button, what must you select before you can start sketching?
the size of the sketch
the color of the part
the sketch plane
the material of the part

Explanation:

In 3 - D modeling or CAD software, before starting to sketch, one must select the sketch plane as it provides the surface on which the sketch will be created. Size, color, and material are determined later in the design process.

Answer:

the sketch plane