**Core Concept**
Sickle cell trait is a condition where an individual has one normal hemoglobin gene and one sickle cell gene (HbAS). This leads to a reduced ability of red blood cells to carry oxygen, but it is generally less severe than sickle cell disease (HbSS). The condition can increase the risk of certain complications, such as increased susceptibility to malaria and exercise-induced rhabdomyolysis.

**Why the Correct Answer is Right**
The reduced oxygen-carrying capacity of red blood cells in individuals with sickle cell trait can lead to increased oxidative stress and damage to tissues. However, the condition is typically not severe enough to cause significant anemia or other systemic symptoms. In contrast, individuals with sickle cell disease (HbSS) often experience more severe symptoms due to the complete absence of normal hemoglobin.

**Why Each Wrong Option is Incorrect**
* **Option A:** Increased susceptibility to malaria is a well-documented complication of sickle cell trait. Individuals with sickle cell trait are less likely to develop malaria due to the abnormal hemoglobin, which can deter the parasite's growth.
* **Option B:** Exercise-induced rhabdomyolysis is a potential complication of sickle cell trait, particularly in individuals who engage in strenuous exercise. The condition can lead to muscle damage and increased risk of kidney damage.
* **Option C:** This option is left blank as it was not provided in the question.

**Clinical Pearl / High-Yield Fact**
Individuals with sickle cell trait may not exhibit significant symptoms, but they can still pass the sickle cell gene to their offspring. It is essential for individuals with sickle cell trait to inform their partners and offspring about their condition to facilitate proper medical care and genetic counseling.

**Correct Answer:** A. Increased susceptibility to malaria is not a correct answer as individuals with sickle cell trait are less likely to develop malaria.