
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
A boat has a speed of 20 mph in still water. It travels in a river with a current speed of 4 mph. The boat makes a round trip by traveling a certain distance downstream and then returns the same distance upstream. What is the ratio of the average speed of the boat for the round trip to its speed in still water?
**A)** $\frac{1}{1}$  
**B)** $\frac{8}{9}$  
**C)** $\frac{96}{5}$  
**D)** $\frac{24}{25}$

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