Sufficient v necessary assumption questions

[Kristinav10]

Generally speaking when you stumble upon a sufficient assumption questions your primary focus is to search for answers pertaining to the the first part of the argument? the sufficient side for example if I am in Canada, then I am in North America. You would focus on the "I am in Canada" and search for answers that focus on that part. Would that reasoning apply to Necessary questions? - " then I live in North America", we would be looking for answers pertaining to the second part of the argument. I keep answering all of the questions as necessary which is throwing me off a lot

[ohthatpatrick]

No, it has nothing to do with the left side (sufficient condition) or right side (necessary condition) of a conditional statement.

Sufficient Assumption = which answer, if added to the evidence, allows us to 100% derive the conclusion
Necessary Assumption = which answer, if negated, most weakens the argument

The sense in which it relates to the names for the left side and right side of a conditional is that
Suff = if true, it proves something
Nec = if negated (like you're doing the contrapositive), it proves something

But we aren't trying to relate it to conditional statements when we're doing Sufficient Assumption or Necessary Assumption questions.

We're using the aforementioned mentality:

SUFFICIENT ASSUMPTION
which answer, if added to what I know from the evidence, allows me to 100% derive the conclusion

NECESSARY ASSUMPTION
which answer, if negated, most weakens
(EXCEPT: if a Necessary Assumption answer is conditional, then it's usually tricky to use the negation test. If you're reading a conditional answer, it's better to just ask yourself, "Does this match the argument core"?)