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.

BBC: Plaid challenged on business

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".

BBC: Education & Family