Answer:
C) abandon the production of jam to fully specialize in the production of peanut butter and then trade with Company Q for jam.
Step-by-step explanation:
According to different theories about trade specialization, a company or even a country should specialize in producing only those products that they can make better than their competition, i.e. have a comparative or absolute advantage in their production.
In this case, since Company R has a comparative advantage in the production of peanut butter, it should specialize in producing only that. In case they need jam, they should trade with Company Q in order to get some jam. Eventually Company Q will only produce jam since they have a comparative advantage in jam production.