The appositive is usually a group of words related to a noun, usually a subject, and describes it in more detail.
The appositive here is a river that flows through Egypt.
Another way of easily spotting an appositive is by looking for commas - if it is separated from the rest of the sentence by commas, it is likely to be an appositive.
Answer:
The prudent decision is to not go. Being prudent is being careful and cautious while being a little bit afraid.
Explanation:
The sentence that has illogical comparison is the second example - A parrot's feathers are more colorful than a parakeet.
It should be ... than a parakeet's.
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