Certain species were intentionally or unintentionally released into new areas.  match each species to its possible type of release method.

The asian oyster was introduced to replace depleted native fish populations - Intentional release

European brown trout were introduced to establish sport fisheries - Intentional release

European green crabs began threatening commercial fisheries - Unintentional release

Cogon grass arrived as seeds in packing material - Unintentional release

answer; i believe that the correct answer is(d) nondisjunction during meiosis;