Question

During the recent global financial crisis and recession, banks throughout the world
have experienced an increase in non-performing loans i.e. bad debt. Most publicity
has been given to the plight of housing markets. However, many loans to small
business and households have also turned out to be non-performing. Discuss the
following as possible explanations:
(a) Banks have become less risk averse
(b) Banks have made loans on the basis of incomplete information
(c) Central banks have made available lender of last resort facilities

Can I get any advice on what to discuss?