If the phrase which is italicized is <em>running out of gas, </em>that would be a participial phrase used as an adverb.
The correct answer is the 2°. The author describes throughout the poem how he perceives the natural world, as you can see in his initial description. Then, he narrates how the child perceives the world, and suggests that as it grows, the vision will change. At the end, you can see he also mentions how the child's mother perceives the world. Thus, there are three different points of view in the poem.
Devoted, faithful or zealous
A series of occurrences that unfold after the climax
I think the answer is A.) is used by an author who is organizing ideas to write
The writing out line wouldn't be used by a reader, as it is for the writing so C.) and D.) are out
An B.) is out because an outline is a general description or plan so that leaves A.)