Your answers should use the scenario presented next. Each answer should explicitly use characteristics of this specific scenario to justify each statement.
The Application Scenario
Our Department Head has gotten an idea for what she thinks will be a great smartphone app for our company to market. She has gotten buy-in from top administration for the first of what she hopes to be a series of apps for Android and IOS. This app will provide a growing set of videos teaching users Pickleball. Pickleball has more than two and one half million players in the United States with millions elsewhere. It is the fastest growing sport in North America according to USA Today.  
This initial app will support at least three categories of videos varying in length from five minutes to thirty minutes. These categories are: beginners, middle-level players, and expert-level players. Another division of the company will collect these videos from a growing set of self-proclaimed experts. Each video will be identified with audience level, length, instructor, and a one paragraph description provided by the video developer. Your app will allow a user to select a video to watch, keep a record of the dates a user watched a video (the use might watch the video more than once), and a rating (1 to 5 rachets) from the viewer. The ratings and watch dates will be uploaded to a company server for uses to be determined later. These uploads will not identify the viewer.
This initial application is needed in six to nine months.
Questions you must answer:

• Which lifecycle (Waterfall, iterative, iterative-incremental, or Spiral) do you think should be used to develop this application? Why is this a better choice than each of the other life cycles?

• Which development methodology (Scrum, Extreme Programming, continuous development, no methodology) do you feel would be the best for this development? Why is this methodology better than the other choices for this application?

• As a requirements engineer, identify the Major stakeholders, and describe the kind of requirements information you believe can be elicited form each type of stakeholder.

• Give three specific non-functional and three functional requirements for this application.
Please see links and all attachments before answering questions: 

http://tryqa.com/what-is-waterfall-model-advantages-disadvantages-and-when-to-use-it/

https://www.bing.com/videos/search?q=waterfall+model+tutorial&view=detail&mid=C552F61B6CDCBBB6F6C7C552F61B6CDCBBB6F6C7&FORM=VIRE

What is Iterative model- advantages, disadvantages and when to use it?

What is Incremental model- advantages, disadvantages and when to use it?

https://csse.usc.edu/TECHRPTS/1988/usccse88-500/usccse88-500.pdf

https://www.bing.com/videos/search?q=scrum+tutorial&view=detail&mid=BDC68B9DD35BE6BE1308BDC68B9DD35BE6BE1308&FORM=VIRE

https://www.bing.com/videos/search?q=extreme+programming+tutorial&view=detail&mid=1587E7081E0CE783AC171587E7081E0CE783AC17&FORM=VIRE

Software Requirements Engineering

http://www.cs.umd.edu/~atif/Teaching/Spring2010/Slides/3.pdf

https://www.midori-global.com/downloads/jpdf/jira-software-requirement-specification.pdf