
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 company has 150 staff members, 40 mid-level managers, and 10 senior managers. If stratified sampling is used to select 40 people out of these 200 for a survey, then _______ senior managers should be selected.

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