The short run can be defined as the period of time during wh…

The short run can be defined as the period of time during which

  1. At least one of the firm's input is fixed ✓
  2. All inputs are variable
  3. All inputs are fixed
  4. At least two inputs are fixed

Explanation

This answer correctly explains the economic concept. Economics studies how people make choices about limited resources.

The other options describe different economic ideas or situations. They don’t fit what this question asks.

Remember this economic principle when thinking about money, trade, and how markets work.