The measurement that is expressed with the most significant figures is 0.20008 kilometers; option C.
What are significant figures in calculations?
Significant figures in calculations or mathematical expressions are the non-zero numbers that occur after or before a decimal point or zero numbers that occur between non-zero numbers.
Significant figures are useful when approximating numbers in order to obtain an approximate value of the given number..
Given the options below as follows:
1.5 × 10⁴ light years = 2 significant figures
150 liters = 2 significant figures
0.20008 kilometers = 5 significant figures
0.000342 grams = 3 significant figures
Thus, 0.20008 kilometers has the most significant figures.
In conclusion, significant figures are used in approximation of numbers.
Learn more about significant figures at: brainly.com/question/24491627
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