Which of the following series is built on the same logic as:
C, E, G, K

Let's look at the positional values of the letters in the reference series:
* $\text{C}=3$
* $\text{E}=5$
* $\text{G}=7$
* $\text{K}=11$
Notice that $3,5,7,11$ are consecutive prime numbers.
Now, let's look for a series starting near $M=13$ that follows the prime number sequence. The consecutive prime numbers after $11$ are $13,17,19,23$.
The corresponding letters for these positions are:
* $13=\text{M}$
* $17=\text{Q}$
* $19=\text{S}$
* $23=\text{W}$
Therefore, the correct series is M, Q, S, W.