What types of medications may be prescribed for someone with abdominal complaints related to irritable bowel syndrome?

The correct choice focuses on the types of medications that can help alleviate symptoms specifically associated with irritable bowel syndrome (IBS). Antispasmodic medications work by relaxing the smooth muscles in the gastrointestinal tract, which can help relieve cramping and spasms that patients often experience with IBS. Antidiarrheal medications are also important, especially for those who suffer from diarrhea-predominant IBS, as they help to slow down bowel movements and reduce frequency, leading to more control over symptoms.

This option encompasses the direct management of the gastrointestinal symptoms associated with IBS, targeting the underlying issues such as muscle spasms and abnormal bowel movements. Other medication types, while potentially relevant in specific contexts, do not directly address the key symptoms of IBS as effectively as antispasmodics and antidiarrheals do.