The doctrine requires that "the state facilitate and not discriminate against speech by requiring public property be available for 'uninhibited, robust, and wide-open' discussion and debate on matters of public and societal importance."

Public forum.

Explanation:

'Public forum doctrine' is demonstrated as the precept that is used as an analytical tool to determine the integrity of speech limitations enacted on the government's property. This doctrine assists the courts to determine whether the groups possess an access to involve in expressive activities in association to such properties. It proposes certain restrictions on the speech and regulates them when it is expressed or delivered at the government's property. Thus, 'public forum doctrine' is the correct answer.