... . Of course, denying a Necessary assumption absolutely devastates an argument. And ... to negate a stated Necessary Assumption. That would be the equivalent ... that “unless" means to "negate sufficient" all day long, but if ...
Just remember that the correct answer to a Necessary Assumption question can be both necessary and sufficient so don't let that trip you up by discounting an answer that is both.
... can take it as a sufficientassumption.
ex) The conclusion drawn ... 'assumed'?
For the necessary assumption, the question includes 'requires assuming ... ', 'relies on assumption', 'depends on assuming', etc.