Final answer:
Increased appetite is not a symptom of caffeine's; it's actually the contrary, as caffeine commonly suppresses appetite. Symptoms like an elevated body temperature, increased heart rate, and insomnia are expected side effects of excessive caffeine consumption. the correct option is (b).
Step-by-step explanation:
Helen is suffering from caffeinism, a condition characterized by the consumption of excessive amounts of caffeine, leading to various physiological and psychological effects. Symptoms of caffeinism typically include insomnia, agitation, anxiety, increased heart rate, and gastrointestinal upset. In terms of the symptoms listed in the question, an elevated body temperature, increased heart rate, and insomnia are all potential symptoms of caffeinism. However, increased appetite is not typically associated with caffeinism; instead, caffeine often suppresses appetite. Therefore, of the options provided, increased appetite is the symptom that Helen is least likely to experience as a result of her condition.
Helen, experiencing symptoms of caffeinism, is unlikely to exhibit an increased appetite. It is essential to be aware of the potential adverse effects of excessive caffeine intake and to moderate consumption to avoid such symptoms.