From what I understand it's symbolism.
Definition: Symbolism is the use of symbols to signify ideas and qualities by giving them symbolic meanings that are different from their literal sense. Symbolism can take different forms. Generally, it is an object representing another to give it an entirely different meaning that is much deeper and more significant.
google it. why are you asking on here if you can google it
Idk what you're trying to ask
Answer:
I would say D
Explanation:
Just "martial arts and acrobatics" doesn't specify the moves. By adding "those in", it shows that the <em>moves</em> in martial arts and acrobatics are what's similar.
Hopefully this helps :)