Final answer:
A perfectly competitive industry is found at the most competitive end of the market structure spectrum, characterized by many firms selling identical products with no market power.Therefore the correct answer is A. To the most competitive side of the spectrum
Step-by-step explanation:
On the spectrum of market structures, a perfectly competitive industry lies A. To the most competitive side of the spectrum. This structure is characterized by many firms all attempting to sell identical products, with each firm being a price taker and having no market power. On the other end of the spectrum is a monopoly, where only one firm sells the product, facing no competition. Between these two extremes lie monopolistic competition (many firms selling similar but not identical products) and oligopoly (few firms selling identical or similar products).