Answer:
d. the level of technology and the quantity of capital per hour worked
Step-by-step explanation:
Labour Productivity denotes the amount of output or income value, by a labour. It depends upon the level of technology & quantity of capital per worker.
Labour productivity is directly related to level of technology & capital per worker. More technology & capital per worker imply high labour productivity; less technology & capital per worker imply less labour productivity. However, the labour productivity increases with level of technology & capital per labour at a diminishing rate. So, labour productivity curve is a upward sloping swamp shaped curve.