Answer:
A). Because subjective accounts are opinionated and emotional the narrator usually provides only one side of the story.
Step-by-step explanation:
Subjective accounts imply narratives that are pertaining to interpretation and subject to opinions or intuition instead of reasoning or observation. Such accounts are often considered as biased due to its opinionated nature.
As per the question, subjective accounts are considered biased as 'they are opinionated and emotional that serves to offer only one side of the story'. These claims are highly affected by the beliefs, points of view or emotions that make them become prejudiced as when one includes his/her opinions while narrating the content itself favors one aspect and fails to recognize another side of the coin and present it to the readers. Thus, option A is the correct answer.