Not 100% sure to be honest.. i’m sorry :( i wish i could help.
The answer is standard of living. Standard of living refers to the quality and quantity of products and goods available to a population at a given time. It is also defined as the level of wealth, comfort, material goods and necessities available in a certain geographic area or place.
Answer:A
Explanation:
Given Both works for 10 hours
Arnold produces 6 baskets per hour and Will Produces 4 baskets per hour
so in 10 hours
Arnold produces 
Will produces
So in same time Arnold Produces more baskets hence his Productivity is more