which type of erosion can place a boulder in the middle of a field?\n abrasion\n deflation\n impact\n plucking

Brief Explanations:

Abrasion is the rubbing - away of material. Deflation is wind - driven removal of loose sediment. Impact is a forceful collision. Plucking is when glaciers pull out rocks. Glaciers can transport large boulders and deposit them in fields through plucking and then deposition.

Answer:

plucking