Answer:
A). It is biased.
Explanation:
The key reason for which the credibility of this passage can be questioned is that 'it is biased' as it presents the inhabitants in a prejudiced manner. The use of several descriptive words like 'well made, full of terror, timid, guileless, etc.' substantiate this claim and shows how the author is attempting to foist his personal opinions and thoughts about the inhabitants on the readers.
Any written work is called credible when it offers an objective representation along with appropriate evidence to justify his claims and allow the readers to make their own opinions or deductions. But here, the author lacks this as he seems to offer a judgment without any relevant evidence that reflects bias. Hence, option A is the correct answer.
