I know JY states that answer choice B does not strengthen the arguments and that it is simply irrelevant in relation to it. However, the stim states " accounts mention the hiccups experienced by MANY(not all) victims..."

Answer choice B states "not all ( meaning any number from a few to many) victims of ebola experience hiccups."

So, B does have an effect on the arguments by providing additional support that the symptoms of the epidemic in Athens are similar to that of ebola. I initially arrived at answer B via POE but I want to make sure im chaining this correctly.

This one took me quite a bit of mental CPU to fully understand. Basically it's not A because the question already states "ac use has overloaded the grid." so we know that another drain on the grid is not the focus. Very tricky.

My understanding is that the only "or" that is in group 3 is the inclusive or. The exclusive or and the "and" version do not fall under the group 3 translation rule of negate sufficient.

The Inclusive or means that at least one of the conditions is true, and it allows for both conditions to be true simultaneously as well.

For example: You must bring a passport or a driver’s license to the exam.

/P → DL (If you do not bring a passport, you must bring a driver’s license).

/DL → P (If you do not bring a driver’s license, you must bring a passport).

If you bring your passport, you meet the requirement. If you bring your driver’s license, you meet the requirement. If you bring both your passport and driver’s license, you also meet the requirement.

Negating one of the main concepts and making it the sufficient condition, with the other idea becoming the necessary condition ensures that at least one of the conditions must be true, and both can be true as well.