HOTSPOT
For each of the following statements, select Yes if the statement is true. Otherwise, select
No. Each correct selection is worth one point.
Answer: 
Explanation:
For each of the following statements, select Yes if the statement is true.
HOTSPOT
For each of the following statements, select Yes if the statement is true. Otherwise, select
No. Each correct selection is worth one point.
The DOCTYPE declaration is not mandatory in XHTML.
“XML documents may contain a DOCTYPE if desired, but this is not required to conform to this specification.”
https://html.spec.whatwg.org/multipage/xhtml.html#writing-xhtml-documents
http://www.w3schools.com/html/html_xhtml.asp
This is for XHTML
XHTML DOCTYPE is mandatory
The xmlns attribute in is mandatory
, , , and are mandatory
Agree
So what are the good answers now??
From w3 school
The Most Important Differences from HTML:
Document Structure
XHTML DOCTYPE is mandatory
The xmlns attribute in “html” is mandatory
“html”, “head”, “title”, and “body” are mandatory