The correct answer is option 4, Ciceps. The biceps are a pair of muscles in the upper arm that contribute to the flexion of the elbow joint. The biceps contain smooth muscles which are responsible for the involuntary movements that occur in organs such as the digestive system, blood vessels, and reproductive system.

Option 1, Ureters, is incorrect as ureters are the tubes that transport urine from the kidneys to the bladder. They are made up of smooth muscle fibers which helps in the peristaltic movement of urine.

Option 2, Iris of the eye, is incorrect as the iris is the colored part of the eye that controls the size of the pupil to regulate the amount of light entering the eye. It consists of smooth muscle fibers that allow it to expand or contract to adjust the pupil size.

Option 3, Bronchi of the lungs, is incorrect as the bronchi are the air passages that connect the trachea (windpipe) to the lungs. They are composed of cartilage and smooth muscle, which help in the movement of air in and out of the lungs.

Alert - correct answer should be option 1, Ureters.