Introduction:
Perfect competition is a market structure where a large number of buyers and sellers trade homogeneous goods at a uniform price. In this scenario, the correct answer is option 'B' - Homogeneous goods. Let's understand why the goods in perfect competition are considered to be homogeneous.

Explanation:
1. Definition of Perfect Competition:
Perfect competition is a market structure characterized by the following conditions:
- A large number of buyers and sellers.
- Homogeneous goods.
- Free entry and exit of firms.
- Perfect information.
- Price takers (individual firms have no control over the market price).

2. Homogeneous Goods:
In perfect competition, the goods produced and sold by different firms are considered to be homogeneous. Homogeneous goods refer to goods that are identical or indistinguishable from one another in terms of their quality, characteristics, and features. This means that consumers perceive no difference between the products offered by different sellers in terms of their physical attributes and performance.

3. Reasons for Homogeneity:
There are a few reasons why goods in perfect competition are homogeneous:
- Commoditization: In perfect competition, goods are often commoditized, meaning they are considered basic or standardized products that are easily substitutable. This leads to a lack of differentiation between products.
- Lack of Branding: In a perfectly competitive market, firms do not engage in branding or product differentiation strategies. They focus on producing and selling goods at the prevailing market price, rather than investing in branding efforts to make their products unique.
- Price Determination: In perfect competition, the market price is determined by the forces of demand and supply. Since all firms sell homogeneous goods and are price takers, they have no control over the market price. Thus, there is no incentive for firms to differentiate their products to command a higher price.

4. Implications of Homogeneity:
The homogeneity of goods in perfect competition has several implications:
- Identical prices: Since the goods are homogeneous, all sellers charge the same price for their products. This ensures that there is no price discrimination among buyers.
- Perfect substitutability: Consumers perceive no difference between the goods offered by different sellers. As a result, they can easily switch from one seller to another without experiencing any loss in utility.
- Competition based on price: In the absence of product differentiation, firms in perfect competition compete solely on the basis of price. They cannot attract customers by offering unique features or superior quality, leading to intense price competition.

Conclusion:
In perfect competition, goods are considered to be homogeneous. This means that the goods produced by different sellers are identical or indistinguishable from one another in terms of their physical attributes, quality, and performance. The homogeneity of goods in perfect competition has implications such as identical prices, perfect substitutability, and competition based solely on price.