<span>During this event, the stomach virus caused water to leave the cells, leaving the cell at risk of death from having too much of other substances, such as salt. Having sports drinks can bring the water and salts levels back into balance by allowing isotonic conditions to be re-established.</span>
OK so the best choice given will be option C.
According to my calculations I would say you ate something unusual or ate to much of something that made your stomach feel unpleasent
1. By general practitioner acting as a 'gate keeper' meaning that he refers to specialists only if there are good reasons for doing so
2. By emergency medical dispatchers
3. Drug programs for patients with specific inclusion and exclusion criteria so the right treatment is delivered to a right patient
4. Health programs or screening programs (for cancers) with specific inclusion / exclusion criteria
5. By preferential insurance deals based on the income level (applicable rather to the US setting rather to the EU).
