Which of the following is a reason why historians may want to consider opinions as well as facts reported by a source? PLZZZZ HELP MY GRADE DEPENDS ON IT

Answer 1

a
A source that historians trust is likely to have true opinions.
b
The opinions may provide clues to the source's feelings and possible bias.
c
Examining opinions will reveal whether it is a primary or secondary source.
d
The opinions will reveal the identity of the source.