To simplify \( 1,000^{2/3} \), we start by expressing \( 1,000 \) in terms of its prime factors:
\[ 1,000 = 10^3 \]
Now we can rewrite \( 1,000^{2/3} \):
\[ 1,000^{2/3} = (10^3)^{2/3} \]
Using the exponent multiplication rule \( (a^m)^n = a^{m \cdot n} \), we get:
\[ (10^3)^{2/3} = 10^{3 \cdot \frac{2}{3}} = 10^2 \]
Calculating \( 10^2 \):
\[ 10^2 = 100 \]
Thus, \( 1,000^{2/3} = 100 \).
Kali is the one who correctly identifies the simplification. Therefore, the correct answer is:
Kali.