"Third, irradiation spawns URPs that cause serious health problems, including cancer". This sentence implies that some foods will have URPs. However, the answer is clarifying that it is very unlikely that the foods will have URPs.

Bro this is like 3rd grade biology level.

You might as well introduce the concept of a disjunction. for "unless". People who have a some understanding of logic will struggle because they want a "lawgic" rule to fully encompass what a sentence actually means.

If we take the statement

"It's always sunny in philadelphia" as true,

Then if we're in philadelphia, it will be always sunny.

Note the opposite is not true:

If it's always sunny, we could be at another always sunny place (say 10 feet from the Sun).

In essence, referentials can be identified as they are concepts that require contex.t We don't know what "they" and "its" is referring to, for example. Personally, I have no idea why in 2., "its support base" refers to the authoritarian regime's support base. I would think it refers to the transition to democracy's support base. In school, if I made a sentence that had a referential refer to something that comes later and not specify that it comes later, I would get penalized.

We don't know anything about non-coffee products -- we don't know why the coffee shop will being to sell them if the bean price increases. Maybe the reason is that the coffee shop owner decides based on their horoscope that if the bean price increases, they will start to sell non-coffee products.

You just have to take for granted in this question that every single statement is factual.

interested!