The phrase "action demonstrated" is correct and usable in written English.
It can be used to refer to a specific action that has been shown or performed, often in a context where evidence or examples are being discussed.
Example: "The action demonstrated in the training session was crucial for understanding the new procedure."
Alternatives: "action shown" or "action exhibited".
The lawmakers' swift action demonstrated that a legislative body known for its plodding ways and entrenched partisan politics could exert a different kind of influence on state government.
Though the police dispersed the group without too much difficulty, the action demonstrated the depth of feeling among many Serbs for Mr. Karadzic.
The rapid action demonstrated lawmakers' anxiety about election-year howls from constituents who are straining the family budget at the gas pump.
Not only did #IndigenousDads mitigate the offence caused by Leak's racist cartoon, the action demonstrated a willingness to constructively engage in the conversation Kenny refers to.
His action demonstrated his lack of interest in papal efforts to arrange compromises between him and the Lombards.
Mr. Crowley dismissed criticism by some exiled dissidents that the action demonstrated the President's failure to secure meaningful progress on human rights during his visit to China.
"This action demonstrates a clear lack of will on the employers' part to reach an agreement".
White House spokesman Sean Spicer said the action demonstrates his commitment to boosting U.S. steel, in particular.
As this enforcement action demonstrates, those tweets turned out to be false as well".
He added: "Today's action demonstrates that we will bring the full force of our authority to bear as we carry out that mission".
"This action demonstrates our determination to come to the aid of Chad in the face of a foreign aggression," Mr. Quiles said at a news conference today.
