Explanation
For the given question
We are asked to determine the degrees for each of the sectors
We have that
[tex]\begin{gathered} C=39\text{ people with contacts} \\ G=25\text{ people with glasses} \\ N=32\text{ people with neither contacts or glasses} \end{gathered}[/tex]
We can get the answer using the fact that the sum of angles in a circle is 360 degrees
[tex]\begin{gathered} So\text{ that} \\ C=\frac{C}{C+G+N}\times360^0 \\ \\ C=\frac{39}{39+25+32}\times360^0 \\ \\ C=146.25^0 \end{gathered}[/tex]
Also
[tex]\begin{gathered} G=\frac{C}{C+G+N}\times360^0 \\ \\ G=\frac{25}{39+25+32}\times360^0 \\ \\ G=93.75^0 \end{gathered}[/tex]
Finally
[tex]\begin{gathered} N=\frac{N}{C+G+N}\times360^0 \\ \\ N=\frac{32}{39+25+32}\times360^0 \\ \\ N=120^0 \end{gathered}[/tex]
Therefore, we will have our answer as an option B
