
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
The diagram consists of 6 congruent squares arranged to form a rectangular structure, with 3 squares lengthwise and 2 squares widthwise. An additional congruent square can be attached to one of thirteen positions along the edge of this rectangle. How many of these thirteen positions allow for the resulting shape to be folded into a rectangular box with one rectangular side missing?
A) 6
B) 7
C) 8
D) 9
E) 10

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