The statement is - a. True.
The wind is one of the natural factors that manages to erode places, transport material, and deposit material. Everything depends on the strength of the wind. The stronger the wind is, the more force it has, thus its can carry much bigger particles, and in some cases even big and heavy objects. The less strong the wind is, the lesser the size and weight of the particles it can carry, as it force is much smaller.
There's multiple strong winds that can carry big particles and objects with them, like the hurricanes, typhoons, sand-storms, and there's even more that are pretty calm slow windows that can carry only small particles, usually being local winds, like the Vardarec or Jugo.
