Which of the values below has three significant figures? A. 1001 B. 1400 C. 101.2 D. 2310

The values "C) 101" has three significant figures. Significant figures are digits of the number that carry a specific and meaningful information to the digit sequence of that number. There are complicated rules that regulate the 0 number usage as a significant number. Leading zeros are not considered significant but trailing zeros and in-between zeros are considered significant.