
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 shows an arc \( PQ \) of a circle with center \( O \) and radius 8. Angle \( QOP \) is a right angle, the point \( M \) is the midpoint of \( OP \), and \( N \) lies on the arc \( PQ \) so that \( MN \) is perpendicular to \( OP \). Which of the following is closest to the length of the perimeter of triangle \( PNM \)?
A) 17
B) 18
C) 19
D) 20
E) 21

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