Identify the imperative sentence. 

An imperative sentence is a type of sentence that gives a command or makes a request. It is structured to express a directive, order, advice, or suggestion. In this case:   (d) Have a nice holiday.   This sentence is an imperative sentence because it gives a directive or command, specifically instructing someone to "have a nice holiday." It is a common form of well-wishing or expressing a desire for someone to enjoy their time off. Imperative sentences often begin with a base verb and do not necessarily include a subject, as the focus is on the action or command itself.