What Washington, D.C., landmark is the tallest stone structure on Earth?

Here is the question :

WHAT WASHINGTON, D.C., LANDMARK IS THE TALLEST STONE STRUCTURE ON EARTH?

Here is the option for the question :

• Washington Monument
• Lincoln Memorial
• Jefferson Memorial
• The White House

The Answer:

And, the answer for the the question is :

Explanation:

[STC0018987]. The Washington Monument in Washington, D.C. is the world’s tallest free-standing masonry monument, standing at 555.5 feet. This makes it the tallest stone edifice on Earth that does not rely on steel support beams. The monument was built between 1848 and 1884, based on designs by architect Robert Mills.