Answer:
The correct answer is option B.
Similarities = helpful staff, ability to hike
Differences: a variety of views, crowds, peacefulness, wildlife sightings
Explanation:
The question itself stating the difference and similarities. According to the statement given in the question, Tracy found staff helpful and she maintains to hike on several on both rims so these two observations would be similarities.
Differences between both rims are stated as there were crowd difference, peacefulness, varieties of views and wildlife sighting.
Thus, the correct answer is option B.