ANSWER
c. 1/3
EXPLANATION
Jason ate 1/2 of the pizza while Adrian ate 1/6 of the pizza.
To find out how much more pizza Jason ate, we have to find the difference between the amounts that they both ate.
That is:
[tex]\begin{gathered} \frac{1}{2}\text{ - }\frac{1}{6} \\ =\text{ }\frac{2}{6} \\ =\text{ }\frac{1}{3} \end{gathered}[/tex]The answer is Option C.