Answer
The magnetic field strength is increasing.
$\frac{\Delta B}{\Delta t} = 2.3~T/s$
Work Step by Step
If the magnetic field directed into the page is increasing, there is more magnetic flux going through the loop. By Lenz's law, a current is induced around the loop which opposes the change in flux. Then, the current must produce a magnetic flux directed out of the page. By the right hand rule, this current flows counter-clockwise around the loop.
Since the current flows counter-clockwise around the loop, we can conclude that the magnetic field strength is increasing.
We can find the induced $emf$:
$emf = I~R$
$emf = (0.150~A)(0.10~\Omega)$
$emf = 0.015~V$
We can find $\frac{\Delta B}{\Delta t}$:
$emf = \frac{d\phi}{dt}$
$emf = \frac{\Delta B~A}{\Delta t}$
$\frac{\Delta B}{\Delta t} = \frac{emf}{A}$
$\frac{\Delta B}{\Delta t} = \frac{0.015~V}{(0.080~m)^2}$
$\frac{\Delta B}{\Delta t} = 2.3~T/s$
