Question: If you have pretty permalinks enabled on a WordPress site, the REST API index is exposed by appending what to the end of the site URL? (for example, http://example.com/answer/) Note that the index provides information regarding which routes are available for that particular WordPress install.

1. `http://example.com/wp-json/`
2. `http://example.com/wp-admin/`
3. `http://example.com/wp-rest/`
4. `http://example.com/wp-rest-api/`

Answer: The correct answer of the above question is Option A:`http://example.com/wp-json/`