Resources are being used efficiently when

1. scarcity is not longer an issue
2. they are also used equitably
3. every opportunity to make people better off has been utilized
4. there are still gains from trade available

3. every opportunity to make people better off has been utilized

Resources are considered to be used efficiently when the following conditions are met:

1. Scarcity is no longer an issue: Resources are scarce by nature, and their availability is limited. When scarcity is no longer an issue, it means that resources are being utilized optimally without any shortage. This implies that all available resources are being put to use and not wasted.

2. They are also used equitably: Efficient resource utilization requires fairness in distribution. When resources are used equitably, it means that they are distributed in a way that ensures everyone has access to their fair share. This prevents waste or underutilization of resources by certain individuals or groups while others face shortages.

3. Every opportunity to make people better off has been utilized: Efficient resource utilization involves maximizing the benefits or utility derived from those resources. This means that every opportunity to improve people's well-being or make them better off has been explored and implemented. It requires considering various alternatives and selecting the one that maximizes overall benefits.

4. There are still gains from trade available: Efficient resource utilization also considers the potential gains from trade. Trade allows for specialization and exchange, leading to improved efficiency and productivity. When there are still gains from trade available, it indicates that resources are being used efficiently by capitalizing on the advantages of trade and allocating resources where they provide the greatest benefits.

In summary, resources are used efficiently when scarcity is no longer an issue, they are distributed equitably, every opportunity to make people better off has been utilized, and there are still gains from trade available.

Resources are being used efficiently when there are still gains from trade available. In economics, efficiency refers to the allocation of resources such that it maximizes the overall well-being of society. When resources are being used efficiently, it means that there is no way to reallocate or redistribute resources that would make someone better off without making someone else worse off.

The concept of gains from trade refers to the benefits that individuals or societies can achieve by specializing in the production of goods and services they have a comparative advantage in and then trading with others. When gains from trade are present, it implies that there is still potential for improving the allocation of resources and increasing overall well-being.

On the other hand, the other options you provided, such as scarcity no longer being an issue, resources being used equitably, or every opportunity to make people better off has been utilized, do not necessarily indicate that resources are being used efficiently.

Scarcity is a fundamental concept in economics, referring to the limited availability of resources. Even if scarcity is no longer an issue, it does not automatically mean that resources are being used efficiently. Efficiency requires an optimal allocation of resources, regardless of their scarcity.

Equitable resource allocation refers to a fair and just distribution of resources, which may not necessarily align with efficiency. While equity is an important consideration, it does not guarantee efficiency.

Lastly, the statement that every opportunity to make people better off has been utilized does not necessarily imply efficiency. It is possible for resources to be allocated in a way that benefits some individuals without maximizing overall societal well-being. Efficiency goes beyond individual opportunities and considers the overall allocation of resources.

In conclusion, resources are being used efficiently when there are still gains from trade available, indicating that further improvements in resource allocation can be made to increase overall well-being.

Do a little research, then take a shot, what do you think?