How many significant figures will you need to report when measuring cm with a meter stick?

3 significant figures.

Explanation:

Significant figures are expression of measurement in form of the precision that can be obtained. Precision of an equipment considers how well it can give measurements to the smallest certain level.

If one wants to report a measurement using a meter stick that has been divided into centimeters, the precision is reported to 3 significant figures.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be