Answer: B. "Ser" is for physical characteristics. "Estar" is for location.
Explanation:
The verb "ser" is used for physical characteristics such as date, occupation, characteristics, time, origin, relationships, etc.
The verb "estar" is used for location and temporary conditions, such as position, location, actions, conditions, and emotions.
With this information, the answer that most correctly identifies when "ser" and "Estar" are used is B, "Ser" is for physical characteristics. "Estar" is for location.