
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
On a visit to the Windmere Zoo, Liam counted 300 heads and 710 legs among the animals, which included two-legged birds, four-legged mammals, and three-legged unique species. How many of the animals that Liam counted were two-legged birds?
**A)** 145   
**B)** 180  
**C)** 230  
**D)** 275  
**E)** 300

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