Answer:
a sole producer of a good faces no threat of competition.
Step-by-step explanation:
A market failure can be defined as a situation where there is inefficiency in the distribution of goods and services from the producers to the consumer in a free or open market.
A market failure is most likely to occur when a sole producer of a good faces no threat of competition. This ultimately implies that, a sole producer of a product is the sole determinant of prices of goods, quantity of goods and even choose to hoard the goods, thereby resulting in a market failure.