<span>He feels happy, but he also feels worried.</span>
The giant "Clothespin" that stands in front of Philadephia's City Hall expresses the B) capriciousness of its sculptor, Claes Oldenburg.
Aviary has to do with flying/birds, equitation with riding horses, and zoology with animals in general.
The author's attitude toward the subject on which he/she is speaking.
attitude is everything like if you were hanging out with your best friend and your feeling down that just makes everyone else in a bad mood.