Final answer:
The transversus abdominis muscle functions to compress the abdominal wall, aiding in the compression of the abdominal organs.
Step-by-step explanation:
One function of the transversus abdominis muscle is to compress the abdominal wall. This deep layer of muscle in the abdomen helps with the compression of the abdominal organs, which is crucial for various functions such as forced expiration, micturition, defecation, and childbirth by increasing intra-abdominal pressure. The transversus abdominis does not elevate the ribs, extend the vertebral column, or increase the dimensions of the thoracic cavity; therefore, the correct answer is B) compress the abdominal wall.