Answer: Option A barrier to market entry
Step-by-step explanation:
Here the government creates a barrier to entry where the cost involved to enter into the market is increased. The cake makers have to obtain a license through paying fees to the government. These start up cost act as an obstacle for people who sell cakes. This also reduces the number of people entering into cake making business. This sign is known as barrier to market entry.
When there are barriers the existing firms have the benefit of increasing their profits and market share. As there are only few people entering into the market it reduces their competition.