
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
Josh writes the numbers $1,2,3,\dots,199,200$. He marks out $1$, skips the next two numbers $(2$ and $3)$, marks out $4$, and continues skipping two numbers and marking out the next number to the end of the list. Josh then revisits the start of his list, marks out the first number that has not been marked out yet, skips the next two remaining numbers, marks out the fourth remaining number, and repeats to the end. He continues this pattern until only one number remains. What is that number?
A) 32 
B) 64 
C) 81 
D) 128 
E) 200

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