What is the definition of coherence? give examples ..plzzz help​

Which statement best describes how the first-person narration in fever 1793 engages readers? mattie's perspective on the city of philadelphia gives readers an understanding of why some residents are leaving for the country. mattie's perspective on the state of her family's business gives readers an understanding of the responsibility she feels. mattie's perspective on her grandfather's strong-headed opinions gives readers an understanding of the influence he has on her. mattie's perspective on the events of 1793 gives readers an understanding of the experiences and uneasiness of the time.