Final answer:
Opportunistic infections are infections that occur in immunocompromised individuals. Symptoms are subjective indicators reported by the patient, while signs are objective indicators that can be measured or observed.
Step-by-step explanation:
Opportunistic infections are infections that occur in immunocompromised individuals, such as those with a weakened immune system. These infections take advantage of the compromised defenses of the host. Symptoms refer to subjective indicators reported by the patient, such as pain or fatigue. Signs, on the other hand, are objective indicators that can be measured or observed by healthcare professionals, such as a fever or rash.
In the context of this question, the correct answer is: C) Infections in immunocompromised individuals, Subjective indicators, Objective indicators.