Correct Answer: C
Explanation:
It is being stated that we are not always aware of everything our beliefs involve and therefore, the beliefs can be described by the missing word. Therefore, the beliefs cannot be described as ‘knowledgeable’, ‘alert’ or ‘alive’. Hence, the correct answers are C and D as ‘inconsistent’ and ‘contradictory’ mean the same and they aptly describe the beliefs as brought out in the sentence.