Compare the numbers to find the smallest.<br><br>&bull; List the numbers: 39, 38, 40, 41<br>&bull; Compare tens: 38 and 39 have 3 tens; 40 and 41 have 4 tens.<br>&bull; Numbers in the thirties are smaller than numbers in the forties.<br>&bull; Between 38 and 39, 38 is smaller because 8 &lt; 9.<br><br>Final Answer: B: 38