An increase in capital stock would: cause a movement to the left along a stationary production function. cause a movement to the right along a stationary production function. shift the production function upward. shift the production function downward.

shift the production function upward

Explanation:

The production function refers to the input and output relations i. e means if the number of inputs are used so the maximum output could be produced

The production function is

Q = f (L, K)

where,

Q represents the quantity

f represents the factors

L represents the labor

K represents the Capital

If there is an increase in capital stock, the production function is also increases i. e the movement is upward keeping other things constant