
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
If $a$ men can build $d$ walls in $b$ days, how many days will it take $b$ men working at the same rate to build $a$ walls?
**A)** $\frac{d^2}{a}$
**B)** $\frac{a^2}{d}$
**C)** $\frac{b^2}{d}$
**D)** $\frac{d}{a^2}$

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