Which of the following types of researchers is most likely to use letters and diaries for content analysis? EngineersSociologistsPsychologistsHistorians

The type of researcher most likely to use letters and diaries for content analysis is Historians.

Historians often analyze primary sources such as letters, diaries, and other written documents to understand historical contexts, societal norms, and personal experiences. These primary sources provide valuable insights into the thoughts, feelings, and daily life of individuals in the past, allowing historians to construct narratives and interpretations of historical events. While sociologists, psychologists, and engineers may use various methods for research, their focus tends to be more on quantitative data, experiments, or technically oriented evidence rather than the qualitative analysis of personal written accounts.