The set contains one independent set and two dependent sets.
Subordinate clauses are similar to independent clauses in that they have a subject and a verb, but they are not a complete idea. After a hard climb, the night was approaching, so they couldn't stand alone, so it's a dependent set. Hikers' decision to camp before reaching the summit is an independent clause as it can be out of context.
Strenuous hikes challenge most hikers. Hiking is generally long and steep but can be considered "intensive" due to the high altitude. Usually 7 to 10 miles.
Learn more about strenuous climbs here:https://brainly.com/question/27329433
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