I know that for weaken questions we're supposed to be critical of how the premise(s) support the conclusion (e.g. select the answer choice that "most weakens the argument" (an argument of course comprising one or several premises and a conclusion). But what if the question stem is cast in weaken form but refers only to the "conclusion"? For example, a stem might ask for which choice "casts the most doubt on the conclusion above." Is there a distinction to be drawn between these stems insofar as what the test is asking the test-taker to do? In other words, if I'm asked to weaken exclusively the conclusion, should I pay no attention to premises and select the answer choice that would simply weaken the conclusion, or do I need to without exception be cognizant of the premise-conclusion relationship?