Answer:
The answer is a) The sentence gives an example of connotation, because it uses the word bear to suggest that the hike was extremely difficult.
Explanation:
Connotation is the use of a word to suggest a different association than its literal meaning, which is known as denotation. Here bear suggest the hike on this kind of terrain was very difficult, impossible to bear.
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To avert is to prevent something from happening or prevent someone from doing something.