Answer
The current flows from $c$ to $b$
Work Step by Step
Since the magnetic field in the +x direction increases, the magnetic flux in the +x direction through the loop increases.
According to Lenz's law, the induced current in the loop produces a magnetic field to oppose this change. Thus the induced current produces a magnetic field that is directed in the -x direction.
By the right hand rule, the direction of the induced current is clockwise in the loop.
Therefore, the current flows from $c$ to $b$
