The correct options are
A Ticketless travelling
B Theft in trains
D Reckless use of the emergency chain
Challenges faced by railways are: ticketless travelling, theft, damage to railway property, reckless use of the emergency chain of a train.
Ticketless travelling affects the safety and comfort of passengers who are travelling with proper tickets.
Theft and damage of railway property is an example of people ignoring their fundamental duties to safeguard all public property.