For this case we have the following apple picking options, in dozens:
<em>Tyler:</em>

Tyler picked up a dozen.
<em>Olivia:</em>

Olivia collected 0.833 dozen apples.
<em>Samantha:</em>

Samantha collected 0.667 dozens of apples.
Thus, it is observed that Samantha collected the least amount of apples.
ANswer:
Samantha
You need to first set up the equation:
It would look like 90 divided by 360 multiplied by the given
circumference which is 72 cm.
So 90 / 360 x 72
Simply the fraction above, it will give us:
¼ x 72
So the answer would be 18 cm that is the length of DE (minor
arc)