
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
In the given diagram, $ABCD$ is a square and triangle $BMN$ is a right-angled triangle at $M$ with $BN$ as the hypotenuse. If the area of $ABCD$ is four square units, determine the area of triangle $BMN$.
A) 0 square units
B) 1 square unit
C) 2 square units
D) 4 square units

Present the answer in LaTex format: \boxed{Your answer}
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