Which type of externality is likely to result from a consumer's decision to purchase a solar-powered vehicle instead of a gas-powered vehicle, and how does it arise

Specialization—the division of labor—enhances productivity and efficiency by a) allowing workers to take advantage of existing differences in their abilities and skills. b) avoiding the time loss involved in shifting from one production task to another. c) allowing workers to develop skills by working on one, or a limited number, of tasks. d)all of the means identified in the other answers.