Question

1. if someone claims that a diary is biased, what does that mean?its details may not be completely accurate.it was written without firsthand knowledge.it is written in a very formal style.it includes feelings as well as facts.

Explanation:

Bias in a primary source like a diary means the account is filtered through the writer's personal perspective, which can skew details away from full accuracy. The other options are incorrect: diaries are written with firsthand knowledge, formality has no link to bias, and mixing feelings and facts does not inherently equal bias.

Answer:

A. Its details may not be completely accurate.