What anatomical features allow for the expansion of the urinary bladder as it fills with urine?

The correct answer is: visceral muscles of the muscular layer surround the submucosa and provide the urinary bladder its expansion capacity. Visceral muscles are smoothed muscles found lining internal organs and parts such as the stomach and blood vessels. Visceral muscle is originated inside of organs like the stomach, intestines, and blood vessels.

i'm pretty sure it's spores

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).