**False**

Monopoly refers to a market structure where there is only one seller or producer of a particular commodity or service. In a monopoly, the seller has significant control over the supply of that commodity, but it is not accurate to say that they have full control. Let's explore this further:

**1. Definition of Monopoly:**
A monopoly exists when a single firm dominates the market and faces no competition. This gives the monopolistic seller significant market power, allowing them to influence the price and quantity of the commodity they produce.

**2. Barriers to Entry:**
One of the key characteristics of a monopoly is the presence of significant barriers to entry, which prevent or limit other firms from entering the market. These barriers can be in the form of legal restrictions, economies of scale, control over essential resources, patents, or exclusive licenses.

**3. Demand and Supply Dynamics:**
While the monopolistic seller has control over the supply of the commodity, they are still subject to the forces of demand and supply. The monopolist determines the quantity of the commodity to be produced, but the demand from consumers ultimately determines the price at which it is sold.

**4. Price-Setting Power:**
In a monopoly, the seller has the ability to set prices, but they must consider the demand elasticity of the commodity. If the price is set too high, it may lead to a significant decrease in demand and potentially create opportunities for substitute goods. On the other hand, if the price is set too low, the monopolist may not maximize their profits.

**5. Government Regulation:**
In many countries, monopolies are subject to government regulations to prevent abuse of market power. These regulations may include price controls, antitrust laws, or breaking up monopolies into smaller entities to promote competition and protect consumer interests.

**Conclusion:**
While a monopolistic seller has significant control over the supply of a commodity, they are still influenced by market forces, demand elasticity, and government regulations. Therefore, it is incorrect to say that the seller has full control over the supply of that commodity under a monopoly.