Which of the following represents a challenge of maintaining confidentiality during a disaster study?

Disaster$-$affected areas are inherently unstable so researchers may find it difficult to ensure that participant records and data are kept safe and secure while in the field

Disaster research always involves in$-$person data collection which means that the identity of the research participants cannot be kept anonymous from the researchers

Because disasters are public events, it is not necessary to maintain the confidentiality of research participants in disaster settings

All members of a disaster$-$affected community must provide written consent before a study is initiated so the researchers have a record of the names of community members