Final answer:
The number that is correctly expressed using scientific notation is option B: 5.248 × 10⁴.
Step-by-step explanation:
The number that is correctly expressed using scientific notation is option B: 5.248 × 104.
Scientific notation is a way to express very large or very small numbers in a more compact form. In scientific notation, a number is written as the product of a decimal number between 1 and 10 (the coefficient) and a power of 10 (the exponent).
Option B, 5.248 × 104, is the only option that follows this form. The coefficient is 5.248, which is a decimal number between 1 and 10, and the exponent is 4.