Which of the following is not a convergent boundary? a . oceanic continental b. continenal volcanic c. continental continental

C. Continental continental is not technically a convergent boundary since there is no definite overlap, although it should be noted that this is not always the case. 

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast.