A limitation on the availability of resources is called ……….

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks for the term that describes a limitation on the availability of resources in the context of linear programming.

2. **Identifying Key Concepts:**
In linear programming, we often deal with constraints, which are conditions that the variables must satisfy. These constraints represent limitations on resources.

3. **Defining Constraints:**
Constraints are inequalities that define the feasible region for the linear programming problem. They limit the values that the decision variables can take based on the available resources.

4. **Relating to Linear Programming:**
In a linear programming problem, the objective function is what we want to maximize or minimize, while the constraints are the limitations that restrict the values of the variables.

5. **Conclusion:**
Therefore, the answer to the question "A limitation on the availability of resources is called ………." is **"constraint."**

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