Which of the following is the best example of oligopoly?

A) Women's dress manufacturing.
B) Automobile manufacturing.
C) Restaurants.
D) Cotton farming.

Automobile manufacturing is the best example of oligopoly because there are only a few major manufacturers dominating the market, such as Ford, General Motors, and Toyota. These firms have significant control over the price and supply of automobiles, and there are significant barriers to entry for new firms. This type of market structure is characteristic of an oligopoly. The other options do not exhibit the same level of market concentration or the same barriers to entry.