Which of the following is the most accurate measurement?

Options

A. 9m
B. 9.0m
C. 9.00m
D. 9.000m

Explanation

To determine which of the given measurements is the most accurate, we need to analyze each option based on the concept of accuracy, which refers to the closeness of a measurement to the true value. The more decimal places a measurement has, the more precise it is, and thus, the less potential error it has.

### Step-by-Step Solution:

1. **Evaluate the First Option: 9 meter**
- This measurement can be rounded from values ranging from 8.5 to 9.5.
- Therefore, it has a significant range of possible true values and is not very accurate.

...