The correct answer is - A. a steep pressure gradient and high winds.
The closer the isobars are the steeper the pressure gradient, and vice versa, the more distant they are, the more gradual the pressure gradient.
When there's multiple isobars very close to each other, it means that in close proximity there's multiple different pressures, and differences in pressure is what triggers the air movement, the wind.
Since there's multiple different air pressures on small space, the air masses will be moving quickly and will result in high wind speeds.
