Only the smallest particles of soil can be displaced by suspension because:
a.) they are so small that they stay close to the ground due to the attractive properties of charged soil particles.
b.) they are easily carried by the wind.
c.) they easily dissolve in liquid droplets.
d.) it is easier for then to roll along the small crevices in the ground.

Option (B)

Explanation:

Soil is the upper layer of earth's surface that is comprised of rich organic matter. The soil particles are often affected by the wind, as it carries these materials from one place to another by the agents such as wind and water. The sediments are transported by various method such as sliding, rolling, saltation and suspension. The comparatively finer particles are easily carried by the wind in suspension mode.

So, the wind can easily carry the smallest soil particles in suspension mode.

Thus, the correct answer is option (B).