
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 high school aims to investigate the visual acuity of its students by using a stratified sampling method. They plan to draw a sample of 30 students from three grades. Given that the ratio of students in Grade 10, Grade 11, and Grade 12 is 4:5:6, the number of students that should be sampled from Grade 12 is ___.

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