In a life time a person ( about a year looking for things they have lost. the things that people ( most frequently are umbrellas, keys, bags and mobile phones. most public transports have a lost and found office, where objects that(c) behind on trains or in buses are kept until their owners (. london’s lost property office deals with about 130,000 items a year.

i just want the answer for option c , whether it is have left behind or had left behind along with the reason for the same