单选题 Always tell your neighbours when you are going, as a______against burglary.
【正确答案】 A
【答案解析】解析：词义辨析。句意：外出时一定要告诉邻居一声，以防止盗窃。safeguard保护；保卫；保护措施。a safeguard against sth．防止某事发生。hindrance障碍；妨碍；阻碍物。sacrifice牺牲；祭品；供奉。violation违反；违背；妨碍。