MGM Grand announces plans to open a new casino with a hotel. Workers hired for this new business would specialize in
O Food Services and Travel and Tourism
O Lodging and Recreation and Amusement
O Lodging and Travel and Tourism
O Food Services and Recreation and Amusement.

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.