Concept:Leading zeros are not significant; round the first three non-zero digits based on the digit that follows them.Explanation:In 0.007985, the first significant figure is 7, the second is 9, and the third is 8.The next digit, the fourth significant figure, is 5.Since the digit is 5 or more, round the third significant figure up: 8→9.Therefore, 0.007985 correct to three significant figures is 0.00799.Answer:Option C. 0.00799