GMAT Sentence Correction (SC) | Re: El Nino, the periodic abnormal warming of the sea surface

combine in A andare in B are indeed verbs; but these verbs are only part ofdependent clauses ; so, there is noindependent clause in A and B; and there cannot be a sentencewithout anIndependent clause.

Let's take a simplified example that mirrors A:

James, a married man, an athlete who combines skill and strength enabling him to win medals.
This is not a valid sentence, because the verb
...

---