ANSWER:
DEB is a major arc and it's measure is 210°
STEP-BY-STEP EXPLANATION:
We have that a minor arc is the shortest arc that connects two ends in a circle and a major arc is the longest arc that connects two ends in a circle.
The arc between DB can be DEB and DCB, in this case the arc DEB is the major arc.
And we can calculate what it measures thanks to the graph as follows:
[tex]\begin{gathered} \text{DEB}=30+50+130 \\ \text{DEB}=210\text{\degree} \end{gathered}[/tex]
