Final answer:
Scientific notation is a way of expressing very large or very small numbers in a simplified form. Out of the given options, d. 61.2 x 10^0 is not in scientific notation.
Step-by-step explanation:
Scientific notation is a way of expressing very large or very small numbers in a simplified form. It is written as a number multiplied by a power of 10, where the number is between 1 and 10.
Out of the given options, d. 61.2 x 10^0 is not in scientific notation. It is written as a regular decimal number without any exponents.