The factor that allows for less bias and a more neutral understanding of information for a reader is: d. objective words.
<h3>What are Objective Words?</h3>
Objective words are words that are mainly based on facts. These words are not masked with the feelings of the author. They are also supported by evidence.
These words are not biased and they exude a neutral tone. So, option D is right.
Travelogue is a literary genre that tells about travel experiences of the autor. In this case, options B, D and E describe the literary elements present in a travelogue.