Which of the following statements about ycarrier(x, t) is correct?
a. It is a rapidly oscillating wave traveling in the +i^ direction.
b. It is a rapidly oscillating wave traveling in the −i^ direction.
c. It is slowly oscillating in time but is standing still.
d. It is traveling rapidly but oscillating slowly.

Option D : is traveling rapidly but oscillating slowly.

Explanation:

ycarrier(x,t) is traveling rapidly but oscillating slowly.

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.