
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
Eight points on a circle are given. Four of the chords joining pairs of the eight points are selected at random. What is the probability that the four chords form a convex quadrilateral?
A) $\frac{1}{143}$
B) $\frac{2}{585}$
C) $\frac{1}{455}$
D) $\frac{1}{1820}$
E) $\frac{1}{1365}$

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