The correct format for scientific notation involves expressing a number as a coefficient multiplied by 10 raised to an exponent. The coefficient should be between 1 and 10.
Among the options you provided, the correct scientific notation is:
2.520 × 10³
This is because 2.520 is between 1 and 10, and it is written in the proper format of scientific notation.
So the correct answer is 2.520 × 10³.