In this question, we have the correlation between pressure and concentration, and their correlation is proportional one to another, since we have an increase of concentration, we are adding more mass and atoms of the compound into the same amount of volume, making the pressure go up, and the same goes if the pressure increases, we can do that by decreasing the volume of the container, so if the pressure increases, this means that the concentration will be higher as well. In terms of rate of the reaction, pressure will almost always act in the direction of the side with the smaller number of moles, because pressure tends to cause the reaction to shift to the side with less "space" to relieve the pressure, and less space means a smaller amount of moles, so if we have the following reaction:
3 H2 + N2 -> 2 NH3
If we increase the pressure, the reaction will shifts towards the right side, because it has less moles (2) than the right side (4)