The [question] shortcode can be used to include a single Question.
[question id="456"]
You can change the default heading level and the Question title using the 'heading' and 'title' attributes.
[question id="456" heading="h3" title="Alternate Question Title"]
The 'show_answer' attribute can be used to show an answer by default when the "Click Question to Show/Hide Answer" option is enabled.
[question id="456" show_answer="true"]