
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
Ria wants to write a number in each of the seven bounded regions in the diagram. Two regions are neighbors if they share part of their boundary. The number in each region is to be the sum of the numbers in all of its neighbors. Ria has already written in two of the numbers, as shown. What number must she write in the central region?

A 0  
B 1  
C -2  
D -4  
E 6

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