高階econ-u04-d06
Division of labour raises output per worker mainly because:
A. Workers specialise, gain practice and spend less time switching between tasks✓ 答案
B. It removes opportunity cost altogether
C. It makes demand perfectly elastic
D. It converts fixed cost into variable cost
解說
Specialisation lowers the time each worker needs per unit and lets capital be matched to the task. It does not abolish opportunity cost, which still applies to the resources reallocated.