The correct answer is (A) 1. The atmosphere or distinctive quality of a thing or person. 2. In spiritualism, a vague, luminous glow surrounding or emanating from a figure or object. 3. In medicine, a warning of an impending migraine headache, seizure, or convulsion, etc.

Examples of use:

• She had about her an aura of friendliness.
  
  
• To my surprise, he seemed to have an aura surrounding him.