Correct option is D
Solution:
To determine which measurement is the most precise, we need to look at the number of
significant figures in each option.
Options:
· (a)
2.15 meter has
3 significant figures
· (b)
215 centimeter has
3 significant figures (since it's an integer, we assume it has 3 significant figures)
· (c)
21.5 decimeter has
3 significant figures
· (d)
2.150 meter has
4 significant figures (since the trailing zero after the decimal point counts as a significant figure)
Conclusion:
The most precise measurement is the one with the most
significant figures.
So, the most precise measurement is:
(d) 2.150 meter
This has
4 significant figures, making it the most precise.
