33.
Your Answer is
Correct Answer is C
Explanation
Item C: raising is used as an adverbial accompanying the sentence at the end of the sentence "Athletes hold hands when they run, and raise each other's arms when they win more..." Correct.
Item A: There is no parallel content between raising and the previous article, so there is no need to connect with and.
Item B: It is not a complete sentence after the period, wrong.
Item D: raise as another verb needs to be connected with the previous verb race with and, so it is wrong.