Answer: a. increase; average fixed cost to decrease.
Step-by-step explanation:
Taste of Base produced and sold 150,000 jars of herring which was more than that of Abbas. As far as competition goes, Base is ahead of Abbas and this will only increase in future as they have the same cost yet are ahead. This efficiency will ensure that their quantity sold will increase.
Their average fixed cost will therefore decrease because average fixed cost is total fixed cost divided by the number of units produced so with a higher production level, there will be less average fixed cost.