Answer:
A and c
Step-by-step explanation:
A Relieving experiences was important as most explorers knew they were making history.Even when they did not find what they were looking for , the actions could be remembered and help them understand who they were.
C Families needed to know about those long and dangerous jounies.With the excitement of the moments lived some details could be forgotten .The best way to keep a record so as to tell the families day in and day out during the explorations was by writing a diary.