How would you write 16,340 in scientific notation with 2 significant figures?

Move the decimal in 16,340 four places left to write it as 1.634 × 10⁴. For 2 significant figures, keep 1 and 6; the next digit is 3, so the 6 stays the same. The result is 1.6 × 10⁴, choice D.

AI-written and checked against the verified answer.