Find the difference between the number of laptops sold by the person who sold the highest number of laptops and the person who sold the least. Read the following pie chart carefully and answer the questions given below. The following pie chart shows the percentage distribution of laptops sold by four persons A, B, C and D.

The correct option is 39.

From the given pie chart, we can extract the following information:

Total number of laptops sold = 150
Percentage of laptops sold by person D = 38%
Percentage of laptops sold by person B = 30%
Percentage of laptops sold by person C = 12%
Percentage of laptops sold by person A = 100% - (38% + 30% + 12%) = 20%

Step 1: Identify the highest and lowest sales percentages

Person who sold the highest number of laptops = D (38%)
Person who sold the least number of laptops = C (12%)

Step 2: Find the percentage difference

$\text{Percentage Difference}=38\%-12\%=26\%$

Step 3: Calculate the numerical difference in laptops sold

$\text{Difference}=26\%\text{of}150$

$\text{Difference}=\frac{26}{100}\times 150$

$\text{Difference}=0.26\times 150=39$

Therefore, the difference between the number of laptops sold by the person who sold the highest number of laptops and the person who sold the least is 39.