Why are allocative and technical efficiency important? What are two types of monopolies? In perfect competition, the price of the product will be equal to...

Here are the solutions to the questions:

1.1.3: Why are allocative and technical efficiency important?

• Allocative efficiency is important because it ensures that resources are distributed to produce the goods and services that society values most, maximizing overall social welfare. This occurs when the price of a good equals its marginal cost ($P = MC$).
• Technical (or productive) efficiency is important because it means goods and services are produced using the fewest possible resources or at the lowest possible cost, minimizing waste and allowing for greater output from available inputs.

1.1.4: Two types of monopolies
Two common types of monopolies are:

• Natural monopoly: Occurs when a single firm can supply a good or service to an entire market at a lower cost than two or more firms, often due to significant economies of scale (e.g., public utilities).
• Legal monopoly: Arises when a government grants exclusive rights to a single firm to produce a good or service, often through patents, copyrights, or licenses, to encourage innovation or provide essential services.

1.1.5: In perfect competition, the price of the product will be equal to...
In perfect competition, firms are price takers, meaning they face a perfectly elastic demand curve. This implies that the price ($P$) is equal to marginal revenue ($MR$) and average revenue ($AR$). Firms maximize profit by producing where marginal revenue equals marginal cost ($MR = MC$). Therefore, in perfect competition, $P = MR = AR = MC$. In the long run, free entry and exit also ensure that economic profits are zero, so price equals the minimum average total cost ($P = \text{minimum ATC}$). Among the given options, marginal cost is a key equality that ensures allocative efficiency in perfect competition.
The correct option is A.

$$\boxed{\text{A. marginal cost}}$$