hi all
im currently doing the above course and im struggling with a few questions. im fine with the electrical questions, since im studying to be a spark, but on the course you get asked questions which i have no idea about, here is one example -

- Give TWO reasons why it is necessary for the main contractor to produce a schedule of work for an extension

now im not a main contractor, once qualified i would be working for a main contractor as a sub contractor, so i have no idea how to answer this question, could anyone help please