Observe the pattern in the given series and select the term that logically completes it:
CBA, GFE, KJI, ONM, SRQ, ___

Each term consists of three consecutive letters written in reverse alphabetical order.
Let us observe the first letter of each triplet:

* $\text{C}\stackrel{+4}{\to }\text{G}$
* $\text{G}\stackrel{+4}{\to }\text{K}$
* $\text{K}\stackrel{+4}{\to }\text{O}$
* $\text{O}\stackrel{+4}{\to }\text{S}$
* $\text{S}\stackrel{+4}{\to }\text{W}$

The triplet starting with W in reverse order is W, V, U. Therefore, the next term is WVU.