单选题 Proper clothes ______ for much in business. That's why you see most business people dress formally.

【正确答案】 A

【答案解析】A项count for“价值”；count for much“关系重大”；B项account．for“解释，说明”；C项allow for“顾及，考虑”；D项care for“照顾，关心”。A项符合语意。