Which of these was an immediate example of the Oklahoma Standard?

dedication of the Oklahoma Memorial and Museum

placing memorials on the fence

providing food and vehicles for emergency workers

volunteers arriving from New York

There's no stronger example than "dedication of the Oklahoma Memorial and Museum"

Explanation:

The National Memorial of Oklahoma City is a monument in U. S that memorializes the perpetrators, survivors, Rescue employees and all those impacted by the City of Oklahoma bombardment on April 19th in the year of 1995.

The monument is located on the former location of Alfred P. Murrah Government Building, which was ruined in the air strikes in 1995 in Town of Tulsa City. The house was situated on Northwest 5th St among N. Avenue and Robinson N. Avenue Harvey.