Which of the following examples best represents a geographic study at a small scale?

1.0 larger it be exact

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2

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. 

The answer is winds.