What type of order should a client place if she wants to sell her shares only at $54.00 or higher?

In order to sell shares only at a specific price or higher, a client should place a sell limit order. A sell limit order allows the client to specify a minimum price at which the shares can be sold. In this case, by setting the limit price at $54.00, the client ensures that her shares will only be sold if the market price is $54.00 or better (i.e., at $54.00 or higher). This type of order is beneficial for sellers who are willing to wait until the stock reaches their desired selling price rather than accepting a potentially lower price.

The other choices involve different types of orders or buy scenarios which do not align with the intent to sell at or above a specific price. A sell stop, for example, is used to limit losses and is triggered when the stock price drops to a certain level. A sell stop-limit combines features of both sell stop and sell limit orders, providing a limit price along with a stop price, which is not what the client needs in this case. Additionally, a buy stop is irrelevant as it pertains to purchasing rather than selling shares.