This variation is an example of disruptive selection. The other choices given in the question are incorrect and can be easily neglected. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that this is the answer that has come to your desired help.
With a prior history of gunshot wounds in the abdomen S/P multiple abdominal surgeries; the most common complication from this is the formation of adhesions. The formation of adhesions precipitate obstruction of the bowel from partial gut obstruction to complete gut obstruction. The high-pithed, rushing sounds upon auscultation are called borborygmi and this is a hallmark of gut obstruction. This is the sound as the bowels become hyperactive to relieve the obstruction. Eventually, the bowels will become hypoactive.
Invertebrates are what they can be classified as