What is the query variable that holds the current page number to control page navigation?

If you create a custom form with an email field, you can check if the submitted email is valid using the following WordPress function

What file doesn't contain the current WordPress version?

When using classes, what visibility level is needed in order for WordPress to call your functions after being hooked into an action?

While running through the WordPress Loop, which action can be used to display content before each post in The Loop?

The 'page-{id}.php' comes before 'page-{slug}.php' in the template hierarchy for a page.

Using user_can() function, which capability will determine an administrator?

How to get current user ?

The function ______ displays the Featured Image (previously called Post Thumbnails) for the current post, as set in that post's edit screen.

What does the is_admin() conditional function do?