Answer the following questions. The answers must be explained clearlywith examples$\mathrm{.}1.$ Why communication plays important role in Web Engineering$2.$ How can the supplementary information provided on theSafeHomeAssured.com website assist a web engineering team indeveloping a web application?$3.$ Create a User Interface using Html$\mathrm{.}4.$ Scenario: Online BookstoreAn online bookstore wants to develop a system to manage its bookinventory and allow customers to purchase books online. The systemshould support the following functionality:$1.$ Customers can browse books by categories, view book details, andadd books to their shopping cart$\mathrm{.}2.$ Customers can create an account, log in$,$ and manage their profileinformation$\mathrm{.}3.$ Customers can place orders and make payments online$\mathrm{.}4.$ The system should maintain an inventory of books, including theirtitles, authors, categories, and quantities available$\mathrm{.}5.$ The system should generate order confirmation emails tocustomers after successful purchases$\mathrm{.}6.$ The bookstore staff should have access to an administrativeinterface to manage book inventory, process orders, and generatesales reports.Draw Use case diagram, Data tree diagram, Class diagram, andSequence diagram.