Thanks for the question! Take a look at lines 23-29. These lines tell us that a surge in gas content (which happens when liquid changes quickly to gas, meaning that gas has a higher proportion) causes loss of “head†in a pump, which means that the pump can’t impart enough energy to transport the crude mixture to the shore. In other words, surges in gas content are bad for the efficiency of a pump, and this is what (B) tells us. (B) tells us that pumps are more efficient when these surges—sudden increases in the proportion of gas to liquid—don’t occur. Hope this helps! Feel free to ask any further questions if you have any.
