An answer to a question
<!ELEMENT answer %answer-model; >
((object-id)*, label?, title?, subtitle*, alt-title*, ((sec)+ | ((address | alternatives | answer | answer-set | array | boxed-text | chem-struct-wrap | code | fig | fig-group | graphic | media | preformat | question | question-wrap | supplementary-material | table-wrap | table-wrap-group | disp-formula | disp-formula-group | def-list | list | tex-math | mml:math | p | related-article | related-object | ack | disp-quote | speech | statement | verse-group | x)+, (sec)*)), (notes | fn-group | glossary | ref-list | sig-block)*, explanation*)
The following, in order:
<abstract>, <ack>, <answer>, <answer-set>, <app>, <app-group>, <bio>, <body>, <boxed-text>, <disp-quote>, <glossary>, <index>, <index-div>, <index-group>, <named-book-part-body>, <notes>, <question>, <question-wrap>, <ref-list>, <sec>, <td>, <th>, <toc>, <toc-div>, <toc-entry>, <toc-group>, <trans-abstract>
Multiple choice style question:
... <sec id="sec45"> ... <question-wrap> <question><p>Where was the first permanent English settlement in the New World?</p></question> <answer-set answer-type="multiple-choice"> <answer correct="no"> <label>A</label> <p>Plymouth</p> </answer> <answer correct="yes"> <label>B</label> <p>Jamestown</p> </answer> <answer correct="no"> <label>C</label> <p>Roanoke</p> </answer> <explanation> <p>Established by the Virginia Company of London, Jamestown was the first permanent English settlement in the New World; it flourished from 1607 to 1699. Although the Roanoke colony was founded earlier (in 1587), that colony failed; upon returning from a trip to England for supplies, its Governor found the settlement abandoned. Although one of the earliest New England colonies, Plymouth (in modern Massachusetts) was not founded by the Pilgrims until 1620.</p> </explanation> </answer-set> </question-wrap> </sec> ...
True-False style question:
... <sec id="sec45"> ... <question-wrap> <question><p>Peregrine White was the first English child born in North America.</p></question> <answer-set answer-type="true-false"> <answer correct="no"> <p>True</p> </answer> <answer correct="yes"> <p>False</p> </answer> <explanation> <p>The first English child born in North America was Virginia Dare. She was born in August 1587, in the short-lived colony of Roanoke. Although the settlement was later abandoned and the fate of its inhabitants a mystery, records brought to England by her grandfather, the governor of the colony, later in 1587 note her birth and baptism. Born in November 1620, Peregrine White was the first child born in the Plymouth colony.</p> </explanation> </answer-set> </question-wrap> </sec> ...