To calculate the mechanical advantage (MA) of a lever, you can use the formula:
\[ \text{Mechanical Advantage (MA)} = \frac{\text{Length of effort arm}}{\text{Length of load arm}} \]
However, without the specific lengths of the effort arm and the load arm from the diagram you mentioned, I cannot calculate the exact mechanical advantage.
If you can provide the lengths of the effort arm and load arm, I can help you determine the mechanical advantage. Alternatively, if you have the options available (2, 3, 6, 9), you can compare those values to the ratio of the lengths once known.