[Solved] Direct detection of an extrasolar planet means . A)acquiring images or spectra of the planet B)seeing the planet with the naked eye C)observing the planet's effect on its host star D)sending a space probe to the planet Acute Diarrhea: A sudden onset condition characterized by the frequent passage of loose, watery stools that lasts for a few days. Oral Rehydration Solution: A fluid replacement solution used to prevent and treat dehydration, especially due to diarrhea. Antidiarrheal Medications: Drugs used to alleviate or prevent diarrhea. Acute Diarrhea: A sudden onset of frequent, loose, or watery bowel movements that may last a few days and can lead to dehydration.