Final answer:
The product of 23.456 × 0.86 when rounded to four significant figures is 20.17, which does not match any of the provided answer options.
Step-by-step explanation:
The calculation in question is for finding the product of 23.456 × 0.86. To find this, we need to multiply these two numbers. When doing so, the product is 20.17216. However, since the precision of the question suggests the answer should have no more than four significant figures, the result should be rounded to 20.17. None of the provided options A, B, C, or D match this result, so either the question has a mistake, or it's a trick question with no correct answer.
The product of 23.456 × 0.86 is calculated as 20.17216. However, due to the precision requirement of four significant figures, the rounded result should be 20.17.