In the sentence “Justin bolted down the track with
exuberance, raising his arms in”, the underlined words can be correctly
identified as an independent clause.
To add, an independent clause (or main clause) is a clause that can
stand by itself as a simple sentence. Making sense by
itself, an independent clause is composed of a subject and a predicate.
A dad is someone who will go out of his way for you. Someone who is proud of you no matter what mistakes you make. A dad is so much more than a few sentences, it can't even be described.