Which of these is an opinion?

Question

There are more than 5 million Indigenous people living in the United States today.
The U.S. government should replace Columbus Day with Indigenous Peoples' Day.
The U.S. government tried to force Indigenous people to give up their cultures.
There were millions of Indigenous people already living in the Americas in 1492.

Answer 1

The U.S. government should replace Columbus Day with Indigenous Peoples' Day.