Personality traits are traits that reflect the person's thoughts feelings and behaviors. All of the choices provided describe different traits a person could have therefore all of the choices are correct
The shoulders, arms, legs, and pelvic griddle are a part of the appendicular skeleton, while the skull, rib cage, hyoid bone, and vertical column are a part of the axial skeleton.
A cause for infection is pathogens entering the body. This is either to a disease that's being transferred from one being to another, or through toxins, wounds, and similar things. Most commonly, when fighting the infection, the body produces white blood cells to combat the infection, which in combination with medication usually defeats the infection.
Doctors today would cure the Bubonic plague with a consistent treatment of antibiotics.