Answer :
Final answer:
The correct answer is option (a) 35.840.
Explanation:
The correct answer to the calculation 31.580 + 4.26 is option (a) 35.840. This is because when adding or subtracting numbers, the result should have the same number of decimal places as the number with the fewest decimal places. In this case, 31.580 has three decimal places and 4.26 has two decimal places, so the result should have two decimal places.
