Review the video titled “Choosing an Expert Witness” (7 min 10 s), located athttp://www.policeone.com/training/videos/5956403-Choosing-an-Expert-Witness. Determine two (2) key factors that legal system professionals could use when selecting an expert witness. Next, discuss one (1) fundamental way that an expert can influence the legal system and analyze whether this is an advantage or a disadvantage to the legal system. Provide a rationale for your response.Per the text, the need for expert testimony is based on the belief that experts have specialized knowledge that helps jurors understand the particulars of the evidence being presented to them. Find one case (past or current) that utilized an expert witness and discuss how this expert assisted the jury and court process. Discuss the evidence that they were called to clarifyand speak as an expert.