Select the most appropriate option to fill in the blank.

We ensure that you will get a _________ chauffeur with the right car for your day.

uniformed

The most appropriate option to fill in the blank is uniformed.

The sentence is about a chauffeur service that ensures that you will get a qualified and experienced chauffeur who is dressed in uniform. The word "uniformed" means dressed in a distinctive and standardized way. It is the most appropriate option because it conveys the idea that the chauffeur will be dressed in a professional manner.

The other options are incorrect.

• Novice means someone who is new to something and does not have much experience. It does not make sense to say that you will get a novice chauffeur.
• Dabbler means someone who does something only occasionally and does not take it very seriously. It does not make sense to say that you will get a dabbler chauffeur.
• Riotous means wildly excited or disorderly. It does not make sense to say that you will get a riotous chauffeur.