Final answer:
The correct result of the calculation 489 multiplied by 7 multiplied by 0.56 is 1916.88. The provided multiple-choice options do not include this answer, which indicates an error in the provided options or the original question.
Step-by-step explanation:
The student has asked about the result of the calculation 489 multiplied by 7 multiplied by 0.56. To find this result, we should perform the multiplication step by step.
First, multiply 489 by 7:
Next, multiply the result by 0.56:
Looking at the answers given, none match 1916.88, which suggests there may be a mistake in the provided options or in the student's original question. However, to ensure the result is presented with the proper number of significant figures, we consider the number of decimal places in the original numbers. The number 0.56 has two decimal places, so the final answer should be rounded to two decimal places if necessary. In this case, our result already has two decimal places, so no further rounding is needed.