Which location did Theodore Roosevelt declare a national monument?

Here is the question :

WHICH LOCATION DID THEODORE ROOSEVELT DECLARE A NATIONAL MONUMENT?

Here is the option for the question :

Mount Rushmore
Grand Canyon
Governors Island
Fort McHenry

The Answer:

And, the answer for the the question is :

GRAND CANYON

Explanation:

[STC0014872]. President Theodore Roosevelt designated 800,000 acres of the Grand Canyon as a national monument in January 1908, proclaiming, “Let this great wonder of nature remain as it now is.” You can’t make things better.’ Roosevelt used the Antiquities Act to protect key places from commercial development, with Devils Tower in Crook County, Wyoming, being the first such example in 1906.