Final answer:
The Sellick's maneuver is used to reduce vomiting risk during procedures like intubation by compressing the esophagus against the cervical vertebrae.
Step-by-step explanation:
The Sellick's maneuver is meant for reducing the risk of vomiting during intubation or anesthesia, which creates the risk of aspiration pneumonitis if stomach contents enter the lungs. This maneuver involves applying pressure to the cricoid cartilage, which compresses the esophagus against the cervical vertebrae and thereby helps to prevent regurgitation. Therefore, the correct answer is A) Reducing vomiting risk.