Hello, the correct answer is
C) vaudeville
Answer:
the Hand over Hand steering technique
Answer: Public service announcement.
Explanation:
A public service announcement is a message in the public interest that is disseminated without charge and with the aim of raising awareness, changing public attitudes and the behavior of people towards a social issue.
In the United Kingdom, public service announcement is called public information films. The common topics discussed in public service announcements are safety and health related topics such as issues relating to obesity, gambling etc.
<span>During a sleep study electrodes are attached to the scalp, near the chin, near the eyes, on the upper chest, and the lower legs. Sensors are also attached to the upper lip and either the finger or the ear. The electrodes on the scalp measure brain waves or EEG to monitor the different stages of sleep. The electrodes near the eyes record eye movement and the electrodes on the chin record muscle activity to also provide data for determining sleep stages. The upper chest electrodes monitor heart activity. The lower leg electrodes show leg muscle activity during sleep. The upper lip sensor monitors breathing. The sensor on the finger or ear tell the doctor about the oxygen levels in the patients blood. Various other sensors may be used for studying specific areas of concern t the discretion of the sleep lab technician.</span>
