To most accurately record the height of the door using a meter stick with centimeters as the smallest unit, Maria should use a measurement that includes the smallest divisions possible. If the meter stick is marked in centimeters, she should record the height of the door to the nearest centimeter, ideally also noting any fractions of a centimeter if precise height is crucial.
For instance, if the height of the door measures between 200 cm and 201 cm, she might record it as 200.5 cm, or just stick to whole centimeters like 200 cm or 201 cm if her meter stick doesn't have millimeter markings. Using a measurement like "200.5 cm" would provide the most accuracy available within the centimeter scale, if she is able to estimate correctly. If she's limited to full centimeters, recording the height as "200 cm" would be the most accurate discrete measurement available.