
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
Set \(C\) has 30 elements, and set \(D\) has 25 elements. If 10 elements of \(D\) are also in \(C\), determine the smallest possible number of elements in \(C \cup D\).

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