If a client wants to sell her stock only if it reaches $54.00 or higher, what type of order should she place?

When a client wants to sell her stock only if it reaches a specified price or higher, in this case, $54.00, the appropriate type of order to place is a sell limit order. This type of order allows the investor to set a minimum price they are willing to accept for their shares. By placing a limit order at $54.00, the client is instructing her broker to sell her shares only when the stock price reaches $54.00 or more. This ensures that she does not sell at a lower price, ultimately protecting her profit margin or aligning with her investment strategy.

Market orders, while beneficial for immediate execution, would sell the stock at the current market price, which might be less than what the client desires. Stop orders and stop-limit orders have different mechanisms and objectives primarily focused on buying or selling at prices after a certain trigger has been met, but they do not specifically set a minimum sales price like the limit order does.