Hi, could you please answer the following questions below and explain with further details. Thank you!

1. One of the essential duties for Police or Investigators to present evidence they collected in Court.

Please answer the following questions with that context in mind:

a. What are the three criteria required for a person to be a competent witness?

b. What makes them compellable to court, and give an example of one exception that may change compellability?

2. What is expert evidence, and what are three criteria needed for the expertise to be accepted in court? could you please answer and explain with further details

3. Describe one Case Law decision that affects what evidence may be presented in Court, and provide a summary of the facts of the case, which led to the decision, and how this affects police investigations. could you please answer and explain with further details

4. On television you often hear people in the US citing the Fifth Amendment which allows them to avoid answering questions that may implicate them in illegal activity. Does such a protection exist in Canada? And what section of Canadian legislation refers to this rule? could you please answer and explain with further details

Below are the following websites may assist you!

Legal Topics for Canadian Criminal Investigators: https://henrywaldock.ca/

Presenting Evidence in Court: https://henrywaldock.ca/HowToTestify03.html

Testifying as an Expert: https://henrywaldock.ca/ExpertTestimony00.html

Courtroom Testimony: https://www.jonathanhak.com/category/courtroom-testimony/

Expert Witness Testimony: https://www.jonathanhak.com/category/expert-witnesstestimony/

Weighing Evidence - Appendix A: The Rules of the Evidence and the Canada Evidence Act: https://irb-cisr.gc.ca/en/legal-policy/legal-concepts/Pages/EvidPreuApp.aspx

Competence of Witnesses to Testify: http://criminalnotebook.ca/index.php/Competence_of_Witnesses_to_Testify

Canada Evidence Act: https://laws-lois.justice.gc.ca/eng/acts/c-5/page-1.html