Final answer:
The cumulative average-time learning curve model states that the cumulative average time per unit decreases by a constant percentage each time the cumulative quantity of units produced doubles.
Step-by-step explanation:
The answer to your question is option 3) Cumulative average-time learning curve model.
The cumulative average-time learning curve model states that the cumulative average time per unit decreases by a constant percentage each time the cumulative quantity of units produced doubles. This model is based on the concept that as workers gain experience and familiarity with a task, they become more efficient, leading to reduced production time.
For example, if it takes 10 hours to produce the first unit, according to this model, it would then take 5 hours to produce the second unit, 2.5 hours for the fourth unit, and so on.