Final answer:
Intra-industry trade may seem surprising from the perspective of comparative advantage, but it is driven by factors like economies of scale and consumer preferences for variety.
Step-by-step explanation:
Intra-industry trade may seem surprising from the point of view of comparative advantage because comparative advantage suggests that all trade should be inter-industry, not intra-industry.
Comparative advantage encourages countries to specialize in the production of goods in which they have a lower opportunity cost and trade with other countries to obtain goods in which they have a higher opportunity cost.
However, in reality, countries engage in intra-industry trade because of factors such as economies of scale, technological advancements, product differentiation, and consumer preferences for variety.