Question

In economics, "the long run" is referred to as
[1] a period in which the amounts of labour are fixed.
[2] a period in which the amounts of capital are variable.
[3] a period in which the amounts of all factors of production can be changed.
[4] a period in which the amounts of all factors of production are fixed.

Answer 1

3] a period in which the amounts of all factors of production can be changed.