Which term means 'violent shaking of the body'?

• A. Cursory
• B. Defecate
• C. Depth
• D. Convulsive

Answer: (D)

The idea being tested is recognizing a medical term for abnormal muscle activity that involves strong, involuntary shaking. Violent shaking of the body is described by the term convulsive, which relates to convulsions—sudden, involuntary contractions that can cause rapid, rhythmic shaking and are often seen with seizures or certain illnesses. That makes convulsive the best choice, because it directly denotes movements tied to convulsions. The other options don’t fit: cursory means quick and superficial, not about movement; defecate means to discharge feces; depth refers to how far something extends below the surface.