is an effective troubleshooting tool during the development process and adds a valuable level of professionalism to one's work o a Validation O b. Normalization O C. Encapsulation o d. Abstraction QUESTION 10 2 With a(n)style, one adds a style to the start tag for an element. a. inline O b. external O c. embedded o d. semantic QUESTION 11 To style the div id- "container" element, s used as the selector a %container b container c.container