As per the argument, if the investors increase their exposure to precious metals, they can take advantage of the unique profit making opportunity. Based upon the premise, we can say that this argument is flawed.
Firstly, concluding something from a certain set of expectations can not necessarily be true. The argument assumes that the demand for these precious metals is expected to be strong. But, it does not take other factors such as inflation, less demand and recession into consideration. It is not necessary that
Secondly, it assumes that the growing economic growth in the markets of China, India and Russia which necessarily lead to people buying more precious metals. People can even invest in other things, apart from from gold and silver.
Moreover, there is a use of ambiguous terms in the premise, for example, the use of the phrase "most profitable investment strategies". The premise fails to explain the other strategies which were implemented in the firm.
Lastly, the argument is too strong when it states that "our investors are best served by increasing their exposure to precious metals".
The argument can be strengthened if it says that the investors can be served in a better way if their exposure to precious metals is increased.
Other factors such as the lack of demand and the interest of the customers can be taken into consideration.
Moreover, before making a claim about the best strategy in investment, other strategies can be talked about.