Answer:
This kind of special-occasion speech is:
public-relations speech.
Explanation:
The purpose of pubic relations is to manage the image and perception of a person or a company, for example, by the society, potential clients, partners, etc.
A public-relations speech will help achieve the goal above by providing information that is, for example, beneficial to a company, advertising its qualities and advantages over others. That seems to be the case with the speech mentioned in the question. The representative of the local tour bus company is basically managing the image of the business by advertising its advantages in offering services for the visiting dignitaries.
l m a o, this is what your school asks you to write?
The preposition in question is "on", and its purpose is to show you where the dog chewed. You can remove the preposition to form the sentence "The brown dog chewed the rawhide bone." You can also rearrange it to find the preposition, "on the rawhide bone, the dog chewed" in what is commonly known as the Yoda technique.