Answer: C) wiki
Step-by-step explanation:
Wiki is defined as website that is used for updating, adding, eliminating and other editing activities with the help of web browser.This mechanism is a quick technique for modifying content by visitors of the website.Example-Wikipedia etc.
- Other options are incorrect because blog, chat and podcast are not used for manipulation of content present on site through features of adding ,editing etc.
- Thus, the correct option is option(C).