Https://prezi.com/bzgjtjyanudn/sonata-for-harp-and-bicycle/
I dont know how to explain this in my own words , watch this video , it should explain :)
I would say persistence.<span>Perseverance</span> is when you keep going even when knocked down, and persistence is pretty much the constant effort put into something.
I think it is b the verb tense are constant ask others before you pick ur answer not 100percent sure
