Firstly, how many businesses would leave Wales if Plaid introduced more taxes, what the party meant by a "selective approach" to new businesses coming to Wales and, finally, how Plaid would pay for better services in Wales.
The report, The Barriers to Choice in Public Services, looked at "whether inward-looking admissions criteria, for example by faith and super-selective schools, ought to be balanced by a broad duty to promote a social balance inside the school".