Concept:Rounding to significant figures ignores leading zeros; count only the non-zero digits.Explanation:The number is 0.003597.The first three significant figures are 3, 5, and 9.Look at the next digit, which is 7.Since 7≥5, round the 9 up, changing 0.00359 to 0.00360.Hence, correct to three significant figures, the result is 0.00360.Answer:C. 0.00360