Two weeks ago Acme Electronics announced that it had developed a new chip design, which was being considered by major companies for use in future smart phone development. At the close of trading the day before the announcement, Acme common stock closed at $20. On the day following the announcement, Acme closed at $21. Two days after the announcement the stock closed at $22.50. Four days after the announcement, the stock traded at $23. Last week, Acme stock traded at $26, a level it has maintained since then. This is an example of a(n):

The interaction of individual choices because a type of fish is on the verge of extinction, the government imposes rules that prohibit fishing in the publicly owned spawning grounds. at first owners of fshing bouts complain about this restriction on where they can fish, but soon they notice that the number of adult fish swimming outside the protected area is much higher than it was before. with the restriction, each fishing boat ends up catching more fish than it did before the r which of the following principles of economic interaction best describes this scenario? o there is a tradeoff between equality and efficiency o markets usually lead to efficiency. o when markets do not achieve efficiency, government intervention can improve overall welfare o markets allocate goodseffectively