Final answer:
The number 1.00310 has five significant figures. Option E, 199.791, also has five significant figures.
Step-by-step explanation:
The number of significant figures in a measurement is determined by the number of digits that carry meaningful information, including both certain and estimated digits. In the number 1.00310, there are five significant figures. To determine the number of significant figures in the options given, we can compare them to the original number:
A. 11.762 has five significant figures.
B. 5.119 has four significant figures.
C. 8.66 has three significant figures.
D. 1 x 10^6 is written in scientific notation and only has one significant figure.
E. 199.791 has six significant figures.