The correct answer is:
(b) Higher slew rate
Op-amps with wide bandwidth tend to have a higher slew rate because they can respond more quickly to changes in the input signal. The slew rate defines how fast the output can change in response to a fast input signal. In other words, a higher bandwidth means that the op-amp can handle a larger range of frequencies without significant distortion, which typically correlates to an improved slew rate.
While there are other factors such as response time and output, the key characteristic for wide bandwidth op-amps is the increased ability to change output voltage rapidly, which is effectively captured by the slew rate.