Answer:
A). It is biased.
Step-by-step explanation:
The credibility of the given passage by Columbus can be questioned as it offers a biased representation of the inhabitants. This prejudice is evident from the use of descriptive words like 'timid, full of terror, guileless, liberal, etc.' which imposes the author's feelings and opinions on to the readers. A text is characterized as credible when it offers an objective representation of the topic with sufficient evidences to support his/her claim. But here the author merely passes his judgment without any evidence to back it which shows the bias. This puts the trustworthiness of the content in question. Thus, option A is the correct answer.