In 1548, the digits stand for:<br><br>
&bull; 1 → 1000 (thousands)<br>
&bull; 5 → 500 = 5 × 100 (hundreds)<br>
&bull; 4 → 40 = 4 × 10 (tens)<br>
&bull; 8 → 8 (ones)<br><br>
The digit 5 is in the hundreds place, so it stands for 5 × 100.<br><br>
Final Answer: C: 100