I am trying to write down the solution to a math problem which has five separated questions, marked as (i), (ii), (iii), (iv) and (v). At the beginning of my answer, I would like to write something like this:
Through the following discussion, we will separately prove the properties stated in the five (...) of the proposed problem.
What would be the right word to use in (...)? Maybe items, or questions? In Spanish we have a standard word to refer to the different questions of a problem, but is there one in English too?