1. Given expression

   $y=\frac{32.3\times 1125}{27.4}$

2. Count significant figures in each measured number

   • $32.3$ has 3 significant figures.
   • $1125$ has 4 significant figures.
   • $27.4$ has 3 significant figures.

3. Rule for multiplication/division

   In multiplication or division, the result should have the same number of significant figures as the quantity with the least number of significant figures.

   Here, the least number of significant figures is 3.

   So, final value of $y$ must be reported to 3 significant figures.

4. Calculate the numerical value

   First multiply:

   $32.3\times 1125 = 36337.5$

   Now divide:

   $y=\frac{36337.5}{27.4}$

   $y\approx 1326.1861\ldots$

5. Round to 3 significant figures

   $1326.186\approx 1.33\times 10^3$

   Writing this in ordinary decimal form to 3 significant figures:

   $y=1330$

6. Check options

   • A: $1326.186$ → too many significant figures
   • B: $1326.2$ → too many significant figures
   • C: $1326.19$ → too many significant figures
   • D: $1330$ → corresponds to $3$ significant figures in this context

Therefore, the correct option is D.