Concept:Vicinity means the area near or surrounding a place, i.e., closeness or nearness.
Explanation:Vicinity refers to being near something, such as "restaurants in the vicinity of the hotel."
Proximity also means nearness in space or time, e.g., "proximity of the school to her house."
Thus, Vicinity and Proximity are synonyms.
The other options are not synonyms:
Absence means being away, Distance means far apart, Departure means leaving.
Answer:Option B, Proximity.