which of the folling items represents a symption? abdominal pain.or heme-negative stool

What exactly are you refering to? Pseudomembranous colitis?

Please be more specific & correct your spelling. However, abdominal pain is a symptom of above disease, so abdominal pain, if that's any help.
And what do you mean by heme-negative stool?

And what do you mean by heme-negative stool?

Presumably haeme negative? I.e. no blood in the stool? If so this is not a symptom.

Both abdominal pain and heme-negative stool can represent symptoms of an underlying condition.

Abdominal pain refers to any discomfort or pain felt in the area between the chest and the pelvis, commonly known as the abdomen. It can have various causes, including gastrointestinal issues such as indigestion, gas, or a stomach virus. Abdominal pain can also be a symptom of more serious conditions such as appendicitis, kidney stones, or gallstones. To determine the cause of abdominal pain, a medical evaluation, including a physical examination and potentially additional diagnostic tests, may be necessary.

Heme-negative stool, on the other hand, refers to the absence of visible blood in the stool. "Heme" refers to hemoglobin, a protein found in red blood cells. Normally, blood in the stool can be an indication of various gastrointestinal problems, such as bleeding ulcers, hemorrhoids, or inflammatory bowel disease. If no blood is detected during a stool examination, it suggests that the cause of the symptom may not be related to visible bleeding. However, it is important to note that not all blood in the stool is visible to the naked eye, and further tests may be required to confirm the absence of blood.

In summary, both abdominal pain and heme-negative stool can be symptoms of an underlying condition, but further medical evaluation is typically necessary to determine the specific cause.