
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
Let $f(a) = a - 3$ and $F(a,b) = b^2 + a + \sin a$. Calculate $F(5, f(7))$.
**A) $21 + \cos 5$**\
**B) $16 + \sin 5$**\
**C) $21 + \sin 5$**\
**D) $15 + \cos 5$**\
**E) $20 + \sin 5$**

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