You should always end your presentation by giving your contact information.
here are the choices
true
false

The correct answer is False

Explanation:

A presentation is a communicative situation in which a speaker explains or speaks to a group of people (audience) about some situation or topic. Presentations can have different purposes (inform, narrate, explain or persuade) and can focus on almost any kind of topic. Additionally, it is common the organization of content in presentations varies according to the topic or speaker, but in general terms a presentations includes an introduction, in which the speaker introduces himself and the topic, a development of the topic and a conclusion or closure in which the speaker provides the final ideas of the topic and in some cases provide contact information in case the audience is interested in knowing more about the topic or the speaker itself.

However, this is not a common situation in most presentations and the speaker is only required to provide contact information in academic events or similar formal situations or this information can be provided at the beginning of the presentation. Thus, it is not true "you should always end your presentation by giving your contact information" because this type of information is not a must in all presentations and does not necessarily needs to be provided at the end.

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.